镍基耐蚀钢的性能,在很大程度上取决于钢中各种相的数量、组成、大小、分布状况和合金元素在晶界的分配情况.镍基耐蚀钢经过等温热处理,通常会形成碳化物相、金属间相等析出相.这些析出相在合金中的形成将导致钢的脆化,显著降低钢的塑性、韧性和耐蚀性.为了对不同热处理条件下镍基耐蚀合金析出相做定性定量分析,实验在选择好合适的电解制度后,利用电解分离方法将析出相从基体中分离.通过扫描电镜(SEM)和X射线衍射(XRD)定性研究了提取后析出相的形貌以及结构特性的变化过程;并利用Rietveld全谱拟合法计算不同析出相的组成及含量,最后还讨论了析出相含量与材料耐蚀性能间的关系.实验结果表明900℃时效形成的析出相最多,且析出相的含量随时间的延长呈明显上升的趋势;腐蚀性能评价结果表明析出相的含量与平均腐蚀速率存在一定的正相关,即随着析出相含量的增加,材料的平均腐蚀速率也增加,耐蚀性能减弱.
参考文献
| [1] | 黄伯云;李成功;石力开.中国材料工程大典第4-5卷:有色金属材料工程(上)[M].北京:化学工业出版社,2006 |
| [2] | 中国腐蚀与防护学会.镍基及铁镍基耐蚀合金[M].北京:北京化学工业出版社,1989 |
| [3] | 荣国器.镍基合金的性能和用途[J].材料导报(Materials Review),1992(3):16-23. |
| [4] | 杨瑞成;聂福荣;郑丽平 等.镍基耐蚀合金特性、进展及应用[J].甘肃工业大学学报(Journal of Gansu University of Technology),2008,28(4):29-33. |
| [5] | 王宝顺,罗坤杰,张麦仓,董建新.油井管用镍基耐蚀合金的研究与发展[J].世界钢铁,2009(05):42-49. |
| [6] | 杨瑞成;王凯旋;吕学飞 .Ni-Ci-Mo-Cu合金的固溶处理及其对耐蚀性的影响[J].材料热处理学报(Transactions of Materials and Heat Treatment),2007,28(8):180-183. |
| [7] | 崔彤,王继杰,管仁国,陈礼清,赵光普.长期时效对GH4586B合金组织及高温拉伸性能的影响[J].材料热处理学报,2010(02):30-34. |
| [8] | 常连华.主要合金元素对镍基合金组织和性能的影响[J].汽轮机技术,2001(05):319-320,275. |
| [9] | 胥国华,焦兰英,张北江,秦鹤勇,赵光普.固溶冷却速度对GH4586合金组织及850℃拉伸性能的影响[J].材料热处理学报,2006(02):47-49,53. |
| [10] | 郭建亭.高温合金材料学应用基础理论[M].北京:科学出版社,2008 |
| [11] | Rasoul Salehi;Ahad Samadi;M.Kh.Savadkoohi.In fluence of etchants on quantitative/qualitative evaluations of the 7' precipitates in a nickel-base superalloy[J].Metallogr.Microstruct.Anal,2012(1):290-296. |
| [12] | E-Wen Huang;Yun Liu;Yang Ren .Evolution of microstructure in a nickel-based superalloy as a function of ageing time[J].Philosophical Magazine Letters,2011(7/8):483-490. |
| [13] | Lee S H;Kim S W;Kang K H .Effect of heat treatment on the specific heat capacity of nickel-based alloys[J].International Journal of Thermophysics,2006,27(1):282-292. |
| [14] | M.T. Kim;D.S. Kim;O.Y. Oh .Effect of γ' precipitation during hot isostatic pressing on the mechanical property of a nickel-based superalloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):218-225. |
| [15] | Grosdidier T.;Simon A.;Hazotte A. .Precipitation and dissolution processes in gamma/gamma ' single crystal nickel-based superalloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1998(1/2):183-196. |
| [16] | A. Strondl;R. Fischer;G. Frommeyer;A. Schneider .Investigations of MX and γ'/γ″ precipitates in the nickel-based superalloy 718 produced by electron beam melting[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):138-147. |
| [17] | 赵雪会,白真权,冯耀荣,魏斌,尹成先,王敬忠.热处理温度及析出相对镍基合金腐蚀性能的影响[J].材料热处理学报,2012(08):39-44. |
| [18] | 田伟,谢发勤,赵雪会.热处理对镍基合金G3耐蚀性能的影响[J].稀有金属材料与工程,2012(03):482-485. |
| [19] | 崔彤,刘爽,王磊,杨洪才.一种新型镍基合金相的析出规律[J].东北大学学报（自然科学版）,2005(06):558-561. |
| [20] | CAI Da-yong;LIU Wen-chang;LI Rong-bin.On the accuracy of the Xray diffraction quantitative phases analysis method in Inconel 718[J].Journal of Materials Science,2004(39):719-721. |
| [21] | R. B. Li;M. Yao;W. C. Liu;X. C. He .Isolation and determination for δ, γ' and γ" phases in Inconel 718 alloy[J].Scripta materialia,2002(9):635-638. |
| [22] | 李冬玲,乔雪璎,刘庆斌,卢翠芬,蒙肇斌,王延庆.GH4199镍基高温合金的析出相分析研究[J].冶金分析,2005(01):1-6. |
| [23] | Calliari I;Magrini M;Dabala M.Microstructural evolution of udimet 720 superalloy[J].Journal of Materials Engineering and Performance,1999(8):111-115. |
| [24] | Kim SE.;Reed RC.;Small C.;James A.;Park NK.;Jackson MP. .Quantification of the minor precipitates in UDIMET (TM) alloy720(LI) using electrolytic extraction and X-ray diffraction[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1998(2):225-232. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%