锻压技术

包覆叠轧条件对Ti64钛合金组织与性能的影响

英文标题：Influence of claddingrolling conditions on microstructure and properties of Ti64 titanium alloy

作者：夏祥春

分类号：TG146

出版年,卷(期):页码：2019,44(2):182-188

摘要：

为研究包覆叠轧条件对Ti64钛合金组织与性能的影响，在不同温度和下压率下，对Ti64钛合金板材进行包覆叠轧，制备实验试样。利用光学显微镜、EBSD和拉伸机，对Ti64钛合金的显微组织、织构和拉伸力学性能进行了分析。结果表明：经930 ℃包覆叠轧的Ti64钛合金为双相组织，该合金RD和TD方向的抗拉强度及伸长率均大于1050 ℃包覆叠轧的Ti64钛合金，且增大轧制下压率有利于促进合金充分再结晶；930 ℃及轧制压缩率87%条件下制备的Ti64钛合金的综合力学性能最理想；1050 ℃包覆叠轧的Ti64钛合金均为魏氏组织，1050 ℃-87%试样的斯密特因子波动较大，且呈现多元化滑移系，拉伸力学性能各向异性较小。

In order to study the influence of claddingrolling conditions on the structure and properties of Ti64 titanium alloy, Ti64 titanium alloy sheets were coated and rolled under different temperatures and reduction ratios. Then, the specimens were made, and the microstructure, texture and tensile mechanical properties of Ti64 titanium alloy were analyzed by optical microscope, EBSD and tensile tester. The results show that Ti64 titanium alloy coated and rolled at 930 ℃ exhibits a twophase structure, and its tensile strength and elongation in the direction of RD and TD are both larger than that of coated and rolled at 1050 ℃. Increasing the rolling reduction ratio is beneficial to promote the full recrystallization of alloy, and the comprehensive mechanical properties of Ti64 titanium alloy prepared at 930 ℃ and rolling compression rate of 87% are the best. All the Ti64 titanium alloy coated and rolled at 1050 ℃ exhibits a Widmanstatten structure, and the Schmidt factor of 1050 ℃-87% sample fluctuates greatly and exhibits a diversified slip system. So the tensile mechanical properties anisotropy becomes smaller.

基金项目：

基金项目:河南省科技发展计划基金(092300410135)；河南省高等学校重点科研基金 (16B460009)

作者简介：夏祥春 (1981-)，男，学士，讲师 Email：wt.lewis@foxmail.com

参考文献：

［1］Lieblich M, Barriuso S, Multigner M, et al. Thermal oxidation of medical Ti6Al4V blasted with ceramic particles:Effects on the microstructure, residual stresses and mechanical properties
［J］. Journal of the Mechanical Behavior of Biomedical Materials, 2016, 54(9):173-184.

［2］Schauerte O. Titanium in automotive production
［J］. Advanced Engineering Materials, 2003, 5(6):411-418.

［3］Yu H L, Yan M, Li J T, et al. Mechanical properties and microstructure of a Ti6Al4V alloy subjected to cold rolling, asymmetric rolling and asymmetric cryorolling
［J］. Materials Science & Engineering A, 2017,710(10):75-85.

［4］Li G, Qu S, Xie M X, et al. Effect of ultrasonic surface rolling at low temperatures on surface layer microstructure and properties of HIP Ti6Al4V alloy
［J］. Surface & Coatings Technology, 2017, 316(1):75-84.

［5］Liu Y, Hu J, Zhang Y, et al. Joining of zirconia and Ti6A14V using a Tibased amorphous filler
［J］. Journal of Materials Science & Technology, 2011, 27(7):653-658.

［6］Leyens C, Peters M. Titanium and Titanium Alloys:Fundamentals and Applications
［M］. Germany:WileyVCH,2003.

［7］Traverso P, Canepa E. A review of studies on corrosion of metals and alloys in deepsea environment
［J］. Ocean Engineering, 2014, 87(9):10-15.

［8］洪权, 赵永庆, 杨冠军, 等. Ti6Al4V合金包覆叠轧薄板的加工工艺与组织性能研究
［J］. 材料工程, 2004,49(11):15-17.

Hong Q, Zhao Y Q, Yang G J, et al. Effects of pack plyrolling process on microstructure and mechanical properties of Ti6Al4V alloy sheets
［J］. Journal of Materials Engineering, 2004,49(11):15-17.

［9］庞洪, 张海龙, 王希哲,等. 包覆叠轧TA7钛合金薄板的组织与力学性能
［J］. 中国有色金属学报, 2010, 20(b10):66-69.

Pang H, Zhang H L, Wang X Z, et al. Microstructures and mechanical properties of TA7 alloy sheet produced by pack plyrolling process
［J］. The Chinese Journal of Nonferrous Metals, 2010, 20(b10):66-69.

［10］Liang Y F, Ye T, Xu S,et al. Insitu control of microstructure and mechanical properties during hot rolling of highNb TiAl alloy
［J］. The Chinese Journal of Nonferrous Metals:English,2017,27(12):7-14.

［11］Wang H, Yu Z, Lei Z, et al. Achieving high strength and high ductility in magnesium alloy using hardplate rolling (HPR) process
［J］. Scientific Reports, 2015, (11):17-24.

［12］Wu T, Jin L, Wu W X, et al. Improved ductility of MgZnCe alloy by hot packrolling
［J］. Materials Science and Engineering:A, 2013, 584(6):97-102.

［13］程帅朋, 苏娟华, 任凤章. 锻后热处理温度对TA10钛合金组织及性能的影响
［J］. 金属热处理, 2016, 41(10):158-161.

Cheng S P, Su J H, Ren F Z. Effect of heat treatment temperature after forging on microstructure and properties of TA10 titanium
［J］. Heat Treatment of Metals, 2016, 41(10):158-161.

［14］崔忠圻, 覃耀春. 金属学与热处理
［M］. 2版. 北京：机械工业出版社, 2007.

Cui Z Q, Tan Y C. Metallography and Heat Treatment
［M］. The 2nd Edition. Beijing:China Machine Press, 2007.

［15］Britton T B, Birosca S, Preuss M, et al. Electron backscatter diffraction study of dislocation content of a macrozone in hotrolled Ti6Al4V alloy
［J］. Scripta Materialia, 2010, 62(9):639-642.

［16］Song J H, Hong K J, Ha T K, et al. The effect of hot rolling condition on the anisotropy of mechanical properties in Ti6Al4V alloy
［J］. Materials Science & Engineering A, 2007, 449-451(13):144-148.

服务与反馈：

【文章下载】【加入收藏】