{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"采用磁控溅射方法在镍基单晶高温合金基体上沉积NiCrAlY粘结层,电子束物理气相沉积方法(EB-PVD)沉积陶瓷层(7 mass%Y2O3-ZrO2).用X-射线衍射(XRD)、扫描电镜(SEM)等研究了EB-PVD热障涂层热循环过程中的相变,同时观察了样品的形貌变化.结果表明,EB-PVD方法沉积的陶瓷层,其柱状晶粒簇拥成团,表面比较致密,然而晶粒簇间存在间隙,允许柱状晶横向伸缩,使基体能在相对大的范围内自由膨胀.经高温氧化后,陶瓷层表面变得疏松,柱状晶粒簇间距增大,随着热循环的继续进行,相邻较大的间隙互相连接而形成微<span style=\"color:red\">裂纹</span>,并逐渐横向及纵向扩展.循环氧化比恒温氧化更易于产生<span style=\"color:red\">显微</span><span style=\"color:red\">裂纹</span>.1050℃热循环过程中,ZrO2正方相的c/a轴比值逐渐增加,Y2O3含量逐渐减少,非平衡正方相逐渐分解成平衡正方相和立方相.循环300次后,观察到少量从平衡正方相转变而来的单斜相.","authors":[{"authorName":"李美姮","id":"4d9edf54-b489-4833-b4bf-d6fa73bed010","originalAuthorName":"李美姮"},{"authorName":"孙晓峰","id":"c62891d2-5af1-4fc6-a9af-4b47acb0af9d","originalAuthorName":"孙晓峰"},{"authorName":"宫声凯","id":"cb3db845-4888-4cb2-922f-1fe6a6dd7dee","originalAuthorName":"宫声凯"},{"authorName":"张重远","id":"d368d3ff-9096-46a3-9cbc-c51b8d2d0b8d","originalAuthorName":"张重远"},{"authorName":"管恒荣","id":"6c3ec58d-d62e-4a85-9fc0-7d15dd1f5a19","originalAuthorName":"管恒荣"},{"authorName":"胡望宇","id":"9724710a-2602-4d85-bfc1-f71d139fc15d","originalAuthorName":"胡望宇"},{"authorName":"胡壮麒","id":"be0e96f3-4571-4f54-a026-e701887652c2","originalAuthorName":"胡壮麒"}],"doi":"10.3969/j.issn.1005-4537.2002.02.011","fpage":"105","id":"4d3fc1f5-d0a2-4506-8b18-6cd7b866befd","issue":"2","journal":{"abbrevTitle":"ZGFSYFHXB","coverImgSrc":"journal/img/cover/中国腐蚀封面19-3期-01.jpg","id":"81","issnPpub":"1005-4537","publisherId":"ZGFSYFHXB","title":"中国腐蚀与防护学报"},"keywords":[{"id":"5dce14fd-adba-4e94-83dd-8ce822478700","keyword":"电子束物理气相沉积","originalKeyword":"电子束物理气相沉积"},{"id":"53c1bd11-bfbc-4289-84ed-0a3646279ffb","keyword":"热障涂层","originalKeyword":"热障涂层"},{"id":"eb21c381-cce8-4f54-8404-f5258819db5b","keyword":"<span style=\"color:red\">显微</span><span style=\"color:red\">裂纹</span>","originalKeyword":"显微裂纹"},{"id":"1c1a1795-eb10-4277-aa49-c952159384c5","keyword":"相变","originalKeyword":"相变"}],"language":"zh","publisherId":"zgfsyfhxb200202011","title":"EB-PVD热障涂层高温氧化过程中的<span style=\"color:red\">显微</span>结构和相分析","volume":"22","year":"2002"},{"abstractinfo":"高功率、高容量的 LiNi0.8 Co0.15 Al0.05 O2(NCA)正极锂离子电池在电动汽车和定置储能电池等行业中具有非常广阔的应用前景。为使其更具商业竞争力,NCA锂电池的使用寿命至少需要延长至15年,这对现行技术而言是一个很大的挑战。因此,明确 NCA锂电池在循环和储存过程中性能衰减机理是延长 NCA动力电池使用寿命的关键。大量研究表明正极表面膜的形成、表面盐岩结构类 NiO相的出现、<span style=\"color:red\">显微</span><span style=\"color:red\">裂纹</span>的产生、表面导电碳基体的恶化等因素是 NCA动力电池衰减的主要原因。通过常规原子掺杂、表面包覆等方法在一定程度上能有效抑制正极材料的恶化,延长锂离子电池的使用寿命。","authors":[{"authorName":"邱振平","id":"9a3e4abb-ffc3-48d3-bd45-d4fa823dd8e1","originalAuthorName":"邱振平"},{"authorName":"张英杰","id":"921dead5-44ab-416e-a715-5196b52133d6","originalAuthorName":"张英杰"},{"authorName":"董鹏","id":"0fc2396e-5b26-46ba-9a6f-d5679d65114e","originalAuthorName":"董鹏"},{"authorName":"夏书标","id":"c92ff1b6-5e2e-411d-899a-295e69677187","originalAuthorName":"夏书标"},{"authorName":"姚遥","id":"bf58bc0b-df0d-4839-83cc-ea1df989612d","originalAuthorName":"姚遥"}],"doi":"10.11896/j.issn.1005-023X.2017.01.003","fpage":"18","id":"08aa8795-5ac0-4a1f-bc34-825be3cc4f49","issue":"1","journal":{"abbrevTitle":"CLDB","coverImgSrc":"journal/img/cover/CLDB.jpg","id":"8","issnPpub":"1005-023X","publisherId":"CLDB","title":"材料导报"},"keywords":[{"id":"750d2d5e-ec04-48d9-aa03-b63d72c38946","keyword":"NCA正极材料","originalKeyword":"NCA正极材料"},{"id":"2ea1ac5f-ba5d-48f4-8288-d7fba622db09","keyword":"SEI膜","originalKeyword":"SEI膜"},{"id":"71a1c9f5-57ad-4d6b-a068-7f92c805524e","keyword":"类 NiO相","originalKeyword":"类 NiO相"},{"id":"cee3879f-9f77-47a6-8df7-4a5a2281657f","keyword":"<span style=\"color:red\">显微</span><span style=\"color:red\">裂纹</span>","originalKeyword":"显微裂纹"},{"id":"fea9396c-5187-4bb6-8ec1-12c8fad1dc83","keyword":"改性措施","originalKeyword":"改性措施"}],"language":"zh","publisherId":"cldb201701003","title":"LiNi0.8 Co0.15 Al0.05 O2正极活性材料的衰减机理及改性措施?","volume":"31","year":"2017"},{"abstractinfo":"运用原子力<span style=\"color:red\">显微</span>镜(AFM)对形状记忆合金CuNiAl中<span style=\"color:red\">裂纹</span>扩展行为进行了观察.观察表明,拉伸时,<span style=\"color:red\">裂纹</span>尖端首先产生马氏体,纳米微<span style=\"color:red\">裂纹</span>择优沿马氏体相界面形核.但当外力较大,且<span style=\"color:red\">裂纹</span>扩展距离较长使裂尖应力集中足够大时,不但能诱发马氏体相变,也可出现滑移带.一旦出现滑移带,<span style=\"color:red\">裂纹</span>也可沿马氏体或滑移带交替扩展.","authors":[{"authorName":"陆永浩","id":"b790f125-98f9-4a16-93b1-3f27067ce0f2","originalAuthorName":"陆永浩"},{"authorName":"梁松","id":"d745c24d-4854-42e5-add6-e798c63676fb","originalAuthorName":"梁松"},{"authorName":"乔利杰","id":"19b7d987-c8fb-4002-a552-63ccdc821580","originalAuthorName":"乔利杰"},{"authorName":"褚武扬","id":"1496e776-800d-4ead-a02d-f3105de461c3","originalAuthorName":"褚武扬"}],"categoryName":"|","doi":"","fpage":"261","id":"90334597-0601-4d19-9166-cbd045dbe019","issue":"3","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"accbc72d-4e1d-4b2a-ae19-88a892162c67","keyword":"CuNiAl形状记忆合金.<span style=\"color:red\">裂纹</span>","originalKeyword":"CuNiAl形状记忆合金.裂纹"},{"id":"6daa9a1d-122b-4a0e-a615-bdbbebc3c166","keyword":"null","originalKeyword":"null"},{"id":"02aa7f1a-24b7-4d53-a8be-7a5a93e410eb","keyword":"null","originalKeyword":"null"}],"language":"zh","publisherId":"0412-1961_2002_3_4","title":"用原子力<span style=\"color:red\">显微</span>镜研究形状记忆合金中<span style=\"color:red\">裂纹</span>形核和扩展","volume":"38","year":"2002"},{"abstractinfo":"运用原子力<span style=\"color:red\">显微</span>镜(AFM)对形状记忆合金CuNiAl中<span style=\"color:red\">裂纹</span>扩展行为进行了观察.观察表明,拉伸时,<span style=\"color:red\">裂纹</span>尖端首先产生马氏体,纳米微<span style=\"color:red\">裂纹</span>择优沿马氏体相界面形核.但当外力较大,且<span style=\"color:red\">裂纹</span>扩展距离较长使裂尖应力集中足够大时,不但能诱发马氏体相变,也可出现滑移带.一旦出现滑移带,<span style=\"color:red\">裂纹</span>也可沿马氏体或滑移带交替扩展.","authors":[{"authorName":"陆永浩","id":"eb00175c-d59f-43b4-87cc-bf53a6182b08","originalAuthorName":"陆永浩"},{"authorName":"梁松","id":"3cb09e73-eb22-414b-8595-731e85b9c464","originalAuthorName":"梁松"},{"authorName":"乔利杰","id":"fd0e9153-7964-4684-9122-eea40369acff","originalAuthorName":"乔利杰"},{"authorName":"褚武扬","id":"1a0093ae-c21e-4a73-91c2-ae621270f197","originalAuthorName":"褚武扬"}],"doi":"10.3321/j.issn:0412-1961.2002.03.008","fpage":"261","id":"42d5162a-09f3-449a-bdfb-4206eb4c77d9","issue":"3","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"c82e7667-b182-45eb-8440-e52784ce1290","keyword":"CuNiAl形状记忆合金.<span style=\"color:red\">裂纹</span>","originalKeyword":"CuNiAl形状记忆合金.裂纹"},{"id":"9a352b05-ef52-407a-b36d-053e611e75f1","keyword":"滑移","originalKeyword":"滑移"},{"id":"ec5beeb8-9d5d-4ee3-bbc9-11984948bc5f","keyword":"马氏体","originalKeyword":"马氏体"},{"id":"a2d0ed98-1977-478d-a6a1-47241e936157","keyword":"原子力<span style=\"color:red\">显微</span>镜(AFM)","originalKeyword":"原子力显微镜(AFM)"}],"language":"zh","publisherId":"jsxb200203008","title":"用原子力<span style=\"color:red\">显微</span>镜研究形状记忆合金中<span style=\"color:red\">裂纹</span>形核和扩展","volume":"38","year":"2002"},{"abstractinfo":"利用高温<span style=\"color:red\">显微</span>镜,对碳钢氢腐蚀<span style=\"color:red\">裂纹</span>的愈合过程进行原位、实时观察,通过录象记录了整个<span style=\"color:red\">裂纹</span>愈合实验过程结果表明,<span style=\"color:red\">裂纹</span>在加热到630℃左右时,发生明显愈合而变小变细.实验中造成的CH4气体散失和内部<span style=\"color:red\">裂纹</span>表面化使得实验结果与真实情况有一定的偏差,观察得到<span style=\"color:red\">裂纹</span>闭合的临界温度630℃低于实际<span style=\"color:red\">裂纹</span>闭合温度.发生氢蚀<span style=\"color:red\">裂纹</span>愈合的机制是热扩散,动力是氢蚀气泡长大导致的塑性变形能Es.在Fe、C和H原子扩散足够快的情况下,氢蚀<span style=\"color:red\">裂纹</span>愈合的条件是Es大于2γ/r(γ为界面表面张力,r为气泡半径或<span style=\"color:red\">裂纹</span>半长).","authors":[{"authorName":"董超芳","id":"c9a63726-48d4-4e00-a462-75713618eb80","originalAuthorName":"董超芳"},{"authorName":"徐璟","id":"8a09dab8-3b5b-4fe3-99a2-18ff7207572c","originalAuthorName":"徐璟"},{"authorName":"李晓刚","id":"7e743e6b-333b-49ad-9036-d37127815577","originalAuthorName":"李晓刚"},{"authorName":"褚武扬","id":"5457ffad-f645-40cb-ae13-4da8b6f79498","originalAuthorName":"褚武扬"}],"doi":"10.3969/j.issn.1005-4537.2003.03.012","fpage":"179","id":"a680bc40-8cd3-4fd0-b729-9556141a51ee","issue":"3","journal":{"abbrevTitle":"ZGFSYFHXB","coverImgSrc":"journal/img/cover/中国腐蚀封面19-3期-01.jpg","id":"81","issnPpub":"1005-4537","publisherId":"ZGFSYFHXB","title":"中国腐蚀与防护学报"},"keywords":[{"id":"0405fff1-e59a-47fa-8836-73ae5379d064","keyword":"高温<span style=\"color:red\">显微</span>镜","originalKeyword":"高温显微镜"},{"id":"72e7b23d-76d8-4039-ba7a-c124e7bc2840","keyword":"原位","originalKeyword":"原位"},{"id":"391357cc-f9a6-41c8-935d-fd581d44148e","keyword":"氢腐蚀","originalKeyword":"氢腐蚀"},{"id":"60939314-53ff-4d15-9f1f-d60e7c6b565f","keyword":"<span style=\"color:red\">裂纹</span>","originalKeyword":"裂纹"},{"id":"d83535d9-82b1-4d99-b198-3be169b8416c","keyword":"愈合","originalKeyword":"愈合"}],"language":"zh","publisherId":"zgfsyfhxb200303012","title":"用高温<span style=\"color:red\">显微</span>镜原位观察钢中氢腐蚀<span style=\"color:red\">裂纹</span>愈合过程","volume":"23","year":"2003"},{"abstractinfo":"利用高温<span style=\"color:red\">显微</span>镜，对碳钢氢腐蚀<span style=\"color:red\">裂纹</span>的愈合过程进行原位、 实时观察，通过录象记录了整个<span style=\"color:red\">裂纹</span>愈合实验过程.结果表明，<span style=\"color:red\">裂纹</span>在加热到630℃左右时， 发生明显愈合而变小变细.实验中造成的CH4气体散失和内部<span style=\"color:red\">裂纹</span>表面化使得实验结果与真 实情况有一定的偏差，观察得到<span style=\"color:red\">裂纹</span>闭合的临界温度630℃低于实际<span style=\"color:red\">裂纹</span>闭合温 度.发生氢蚀<span style=\"color:red\">裂纹</span>愈合的机制是热扩散，动力是氢蚀气泡长大导致的塑性变形能Es.在 Fe、C和H原子扩散足够快的情况下，氢蚀<span style=\"color:red\">裂纹</span>愈合的条件是Es大于2γ/r(γ为界面 表面张力，r为气泡半径或<span style=\"color:red\">裂纹</span>半长).","authors":[{"authorName":"董超芳","id":"ace8980d-6815-4298-8eb2-19e5ba02c4a3","originalAuthorName":"董超芳"},{"authorName":"徐景","id":"a2f44043-a4cb-48f6-91f7-392d111cf0e5","originalAuthorName":"徐景"},{"authorName":"李晓刚","id":"2994a807-ae18-4ada-a87d-0bfcc189f707","originalAuthorName":"李晓刚"}],"categoryName":"|","doi":"","fpage":"179","id":"cee61fa1-5b33-4b34-8c3f-35fe48c971eb","issue":"3","journal":{"abbrevTitle":"ZGFSYFHXB","coverImgSrc":"journal/img/cover/中国腐蚀封面19-3期-01.jpg","id":"81","issnPpub":"1005-4537","publisherId":"ZGFSYFHXB","title":"中国腐蚀与防护学报"},"keywords":[{"id":"739fadb1-e541-41fa-ae25-4c8ca2eb09b1","keyword":"高温<span style=\"color:red\">显微</span>镜","originalKeyword":"高温显微镜"},{"id":"32bb65b4-b448-4b21-95cf-97818e96b1c3","keyword":"in-situ","originalKeyword":"in-situ"},{"id":"7b14b388-11e3-45b8-ba73-9fd96bcdd1e8","keyword":"hydrogen attack","originalKeyword":"hydrogen attack"},{"id":"8a531b1e-4f8c-4ca9-80d0-6c4c11625606","keyword":"crack","originalKeyword":"crack"},{"id":"8034b080-0e7a-484f-b621-50e6fd90b75f","keyword":"healing","originalKeyword":"healing"}],"language":"zh","publisherId":"1005-4537_2003_3_10","title":"用高温<span style=\"color:red\">显微</span>镜原位观察钢中氢腐蚀<span style=\"color:red\">裂纹</span>愈合过程","volume":"23","year":"2003"},{"abstractinfo":"对含铒铝合金板材进行了不同的热处理,分析了各板材的<span style=\"color:red\">显微</span>组织对疲劳<span style=\"color:red\">裂纹</span>扩展和力学性能的影响.结果表明:晶粒的长/径比越小,板材的疲劳<span style=\"color:red\">裂纹</span>扩展速率越慢;且随着疲劳<span style=\"color:red\">裂纹</span>扩展速率的降低,<span style=\"color:red\">裂纹</span>宽度增加且<span style=\"color:red\">裂纹</span>路径曲折;稀土元素Er的加入,在合金中形成Al3(Er,Zr)第二相粒子,其强烈地钉扎位错,阻碍位错运动,以减少位错在晶界处的聚集产生的应力集中,降低板材的疲劳<span style=\"color:red\">裂纹</span>扩展速率.","authors":[{"authorName":"雷欣","id":"284f68d3-f562-4f2e-885f-62423f9841ce","originalAuthorName":"雷欣"},{"authorName":"聂祚仁","id":"3f3c22d7-6a72-42a8-845c-213200023ae7","originalAuthorName":"聂祚仁"},{"authorName":"黄晖","id":"c318e40a-a2c3-4ddc-8bf5-cae5a8ac730a","originalAuthorName":"黄晖"}],"doi":"","fpage":"1035","id":"9c0d4b30-85f8-499f-b5da-3ac32e618e57","issue":"4","journal":{"abbrevTitle":"XYJSCLYGC","coverImgSrc":"journal/img/cover/XYJSCLYGC.jpg","id":"69","issnPpub":"1002-185X","publisherId":"XYJSCLYGC","title":"稀有金属材料与工程"},"keywords":[{"id":"a53a3cc2-09bf-4d2f-9efc-d39d5d848721","keyword":"疲劳<span style=\"color:red\">裂纹</span>扩展","originalKeyword":"疲劳裂纹扩展"},{"id":"a0a82f10-2d0e-46b1-8538-6bb3f2073527","keyword":"铒","originalKeyword":"铒"},{"id":"3882db80-5d6b-42fb-b0d6-6ddb48f82073","keyword":"铝合金","originalKeyword":"铝合金"}],"language":"zh","publisherId":"xyjsclygc201604040","title":"含铒铝合金<span style=\"color:red\">显微</span>组织对疲劳<span style=\"color:red\">裂纹</span>扩展的影响","volume":"45","year":"2016"},{"abstractinfo":"用金相<span style=\"color:red\">显微</span>镜、扫描电镜(SEM)及带有切口的三点弯曲试样研究了<span style=\"color:red\">显微</span>组织对珠光体钢疲劳<span style=\"color:red\">裂纹</span>扩展速率的影响.结果表明:共析珠光体钢中的疲劳<span style=\"color:red\">裂纹</span>扩展速率da/dN取决于珠光体层片间距.细化珠光体层片间距可有效减缓共析珠光体钢中的疲劳<span style=\"color:red\">裂纹</span>扩展速率,尤其在高应力场强度因子幅值△K作用的情况下;珠光体钢的疲劳<span style=\"color:red\">裂纹</span>扩展速率与断裂前的△K之间的关系为:da/dN=6.94×10-9(△K)2.919(mm·c-1);<span style=\"color:red\">显微</span>组织中存在一定量的先共析铁素体可显著降低珠光体钢中疲劳<span style=\"color:red\">裂纹</span>的扩展速率.","authors":[{"authorName":"孙淑华","id":"88b3ce58-f10a-4ca8-a262-9a39dd07b15e","originalAuthorName":"孙淑华"}],"doi":"10.3969/j.issn.1001-0777.2004.02.003","fpage":"7","id":"a577e071-8240-43af-b9cf-199b7f9d3055","issue":"2","journal":{"abbrevTitle":"WLCS","coverImgSrc":"journal/img/cover/WLCS.jpg","id":"64","issnPpub":"1001-0777","publisherId":"WLCS","title":"物理测试"},"keywords":[{"id":"59f7b0c9-d9be-4416-b4cb-08adb5d475cd","keyword":"珠光体钢","originalKeyword":"珠光体钢"},{"id":"070a4101-4c4b-4754-ad4d-5f9c1d798a44","keyword":"<span style=\"color:red\">显微</span>组织","originalKeyword":"显微组织"},{"id":"ec18d52b-4299-4868-a50b-6e96e47be62a","keyword":"疲劳<span style=\"color:red\">裂纹</span>","originalKeyword":"疲劳裂纹"},{"id":"a33f28a2-77a3-4018-b362-b80bf9c737f5","keyword":"扩展速率","originalKeyword":"扩展速率"}],"language":"zh","publisherId":"wlcs200402003","title":"<span style=\"color:red\">显微</span>组织对珠光体钢疲劳<span style=\"color:red\">裂纹</span>扩展速率的影响","volume":"","year":"2004"},{"abstractinfo":"本文测试了三种<span style=\"color:red\">显微</span>组织的Ｔｉ３Ａｌ－Ｎｂ系合金的室温疲劳<span style=\"color:red\">裂纹</span>扩展速率．结果表明，初生α２相的体积分数、基体的晶粒尺寸、高温β转变产物的形貌以及静态屈服强度是影响材料的疲劳门槛值和<span style=\"color:red\">裂纹</span>扩展速率的重要因素；应力比的影响有着普遍的规律性．结合ＳＥＭ断口及<span style=\"color:red\">裂纹</span>扩展路径观察结果，对疲劳<span style=\"color:red\">裂纹</span>扩展行为进行了简单的讨论．","authors":[{"authorName":"艾素华","id":"282b912c-4581-4b5d-97fc-36ed240825e4","originalAuthorName":"艾素华"},{"authorName":"关少轩","id":"5bdc480f-4887-4ba1-be13-acde5597eb9c","originalAuthorName":"关少轩"},{"authorName":"冯泽民","id":"73e2286d-5f09-4950-a3d3-86547d05f1a6","originalAuthorName":"冯泽民"},{"authorName":"葛景岩","id":"633e4553-25ce-4387-8e02-313f303464e1","originalAuthorName":"葛景岩"}],"categoryName":"|","doi":"","fpage":"183","id":"d3812739-3e4a-40ba-af21-30522b26e618","issue":"4","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"a4247b6b-a039-4a89-b006-8c26fc889a68","keyword":"金属间化合物","originalKeyword":"金属间化合物"},{"id":"876bfb87-fbd3-4c24-a40f-041ca1249482","keyword":" fatigue crack growth","originalKeyword":" fatigue crack growth"},{"id":"06124ba9-1799-41f8-b00e-4a759965d9df","keyword":" strees intensity factor","originalKeyword":" strees intensity factor"},{"id":"f824b41b-b8b9-4be0-8a1d-0758db4bc6ee","keyword":" stress ratio","originalKeyword":" stress ratio"}],"language":"zh","publisherId":"0412-1961_1995_4_2","title":"<span style=\"color:red\">显微</span>组织对Ti_3Al-Nb系合金疲劳<span style=\"color:red\">裂纹</span>扩展行为的影响","volume":"31","year":"1995"},{"abstractinfo":"研究了TC17钛合金惯性摩擦焊焊接接头的疲劳<span style=\"color:red\">裂纹</span>扩展规律,并利用光学<span style=\"color:red\">显微</span>镜、扫描电镜对材料的<span style=\"color:red\">显微</span>组织和断口形貌进行分析.结果表明:TC17钛合金母材为α+β网篮状组织,晶粒较大;焊缝区和热影响区内可以看到明显的原β相晶界,焊缝区的原β晶粒较细小,热影响区的原β晶粒较粗大,晶粒内部存在细小的α相.在室温下,当△K≤15 MPa·m1/2时,焊缝区疲劳<span style=\"color:red\">裂纹</span>扩展速率较小,而当△K≥15 MPa·m1/2时,焊缝区的扩展速率最大,其次是热影响区,母材的<span style=\"color:red\">裂纹</span>扩展速率最小;在高温下,焊接接头各部位的<span style=\"color:red\">裂纹</span>扩展速率相差不大,均小于室温.","authors":[{"authorName":"于广娜","id":"0f98d123-360f-4079-843e-02aef4732ac4","originalAuthorName":"于广娜"},{"authorName":"吴素君","id":"68c0df96-5414-4ada-99ed-b5f3a72f77f9","originalAuthorName":"吴素君"},{"authorName":"何胜春","id":"45ab2507-348f-4e8a-9385-1d48dad349b7","originalAuthorName":"何胜春"},{"authorName":"刘颖","id":"0887f3a0-d1f7-4255-83b5-3fd260f9fc8d","originalAuthorName":"刘颖"}],"doi":"10.3969/j.issn.1007-2330.2010.06.020","fpage":"81","id":"999ed18d-cad9-42a9-b856-3c114060e56b","issue":"6","journal":{"abbrevTitle":"YHCLGY","coverImgSrc":"journal/img/cover/YHCLGY.jpg","id":"77","issnPpub":"1007-2330","publisherId":"YHCLGY","title":"宇航材料工艺   "},"keywords":[{"id":"80313495-c471-4daa-92c0-1d5e9462863d","keyword":"TC17钛合金","originalKeyword":"TC17钛合金"},{"id":"f806afb1-db31-4b11-9da3-a782e4209148","keyword":"惯性摩擦焊","originalKeyword":"惯性摩擦焊"},{"id":"949928b4-14ea-425a-9295-7030d30205a1","keyword":"焊接接头","originalKeyword":"焊接接头"},{"id":"c613301a-5e5a-450c-9203-0e0f777b379b","keyword":"疲劳<span style=\"color:red\">裂纹</span>扩展速率","originalKeyword":"疲劳裂纹扩展速率"}],"language":"zh","publisherId":"yhclgy201006020","title":"TC17合金焊接接头<span style=\"color:red\">显微</span>组织与疲劳<span style=\"color:red\">裂纹</span>扩展特性","volume":"40","year":"2010"}],"totalpage":3128,"totalrecord":31276}