采用Gleeble3500热模拟试验机对Ti-6Al-4V钛合金进行了焊接热模拟试验,模拟该合金自高温β相区以一定冷却速率冷却的过程.试样选用两端钻孔的标准焊接模拟试样,均温区约2 mm宽.采用金相显微镜、扫描电镜和X射线衍射分析研究了试样不同区域的显微组织与结构.热模拟区边缘区域为细小的片状α组织,中心均温区域为针状α'马氏体组织;XRD标定发现母材和热模拟区域的衍射峰分别与纯钛密排六方α和α'相偏移一个角度后重合;热模拟区域的显微硬度略高于母材.
参考文献
| [1] | E. Akman;A. Demir;T. Canel;T. Sinmazcelik .Laser welding of Ti6Al4V titanium alloys[J].Journal of Materials Processing Technology,2009(8):3705-3713. |
| [2] | Seshacharyulu T;Dutta B .Influence of prior deformation rate on the mechanism of β→α+β transformation in Ti-6Al-4V[J].Scripta Materialia,2002,46:673-678. |
| [3] | 张喜燕;赵永庆;白晨光.钛合金及应用[M].北京:化学工业出版社,2005 |
| [4] | 杨静,程东海,黄继华,张华,赵兴科,孙占.TC4合金激光焊接工艺参数与接头组织性能研究[J].热加工工艺,2007(23):15-18. |
| [5] | 吴会强,冯吉才,何景山,张秉刚.Ti-6Al-4V电子束焊接焊缝区域精细组织特征[J].航空材料学报,2005(03):21-24. |
| [6] | N. Saresh;M. Gopalakrishna Pillai;Jose Mathew .Investigations into the effects of electron beam welding on thick Ti-6Al-4V titanium alloy[J].Journal of Materials Processing Technology,2007(0):83-88. |
| [7] | 尹丽香,许鸿吉,魏志宇,谢明,王亚军.TC4钛合金电子束焊接接头高温性能与组织[J].焊接学报,2007(10):49-52. |
| [8] | 赵敏;孙长伟;杜则裕.焊接热模拟技术及其应用[J].焊接技术,1999(04):41-42. |
| [9] | 张文钺.焊接冶金原理[M].北京:机械工业出版社,1997 |
| [10] | 王金雪,袁鸿,余槐,沙爱学,王庆如.冷却速度对TC18钛合金焊接热模拟均温区组织和性能的影响[J].航天制造技术,2008(03):19-21. |
| [11] | 钟玉;屈金山;陈文静.TOt钛合金电子束焊接头性能研究[J].焊接,2008(10):38-41. |
| [12] | R. Ding;Z.X. Guo .Microstructural evolution of a Ti-6Al-4V alloy during β-phase processing: experimental and simulative investigations[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(1/2):172-179. |
| [13] | Gil Mur F X;Rodriguez D;Planell J A .Influence of tempering temperature and time on the α'-Ti-6Al-4V martensite[J].Journal of Alloys and Compounds,1996,234:287-289. |
| [14] | Zeng L;Bieler TR .Effects of working, heat treatment, and aging on microstructural evolution and crystallographic texture of alpha, alpha ', alpha '' and beta phases in Ti-6Al-4V wire[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):403-414. |
| [15] | Jovanovic M T;Tedic S;Zec S et al.The effect of annealing temperatures and cooling rates on microstructure and mechanical properties of investment cast Ti-6Al-4V alloy[J].Materials & Design,2006,27:192-199. |
| [16] | 程东海,黄继华,林海凡,张华.TC4钛合金激光拼焊接头显微组织及力学性能分析[J].焊接学报,2009(02):103-106. |
| [17] | 辛社伟,赵永庆,曾卫东.钛合金固态相变的归纳与讨论（Ⅲ）--常用检测方法[J].钛工业进展,2008(03):26-33. |
| [18] | P. Wanjara;M. Brochu;M. Jahazi .Ti-6Al-4V electron beam weld qualification using laser scanning con focal microscopy[J].Materials Characterization,2005(3):254-262. |
| [19] | John W Elmer;Joe Wong .Thorsten ressler,spatially resolved X-ray diffraction phase mapping and α→β→α transformation kinetics in the heataffected zone of commercially pure titanium arc welds[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1998,29:2761-2773. |
| [20] | 邓安华 .钛合金的马氏体相变[J].上海有色金属,1999,20(04):193-199. |
| [21] | Malinov S;Sha W;Guo Z et al.Shnchrotron X-ray diffraction study of the phase transformations in titanium alloys[J].Materials Characterization,2002,48:279-295. |
| [22] | 张装生.钛合金焊接工艺的探讨[J].化工装备技术,2002(02):36-37. |
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%