| 脉冲电流冲击处理对TC11钛合金组织与性能的影响 |
| |
| 引用本文： | 王中奇,宋燕利,华林,余永情. 脉冲电流冲击处理对TC11钛合金组织与性能的影响[J]. 金属热处理, 2020, 45(12): 29-35. DOI: 10.13251/j.issn.0254-6051.2020.12.006 |
| |
| 作者姓名： | 王中奇 宋燕利 华林 余永情 |
| |
| 作者单位： | 1.武汉理工大学 现代汽车零部件技术湖北省重点实验室, 湖北 武汉 430070;2.武汉理工大学 汽车零部件技术湖北省协同创新中心, 湖北 武汉 430070 |
| |
| 基金项目： | 国家自然科学基金;教育部长江学者和创新团队发展计划项目;湖北省技术创新专项 |
| |
| 摘 要： | 利用光学显微镜、扫描电镜、X射线衍射仪、万能材料试验机和显微硬度计等研究了脉冲电流冲击处理(EST)对TC11钛合金微观组织和力学性能的影响。结果表明:不同脉冲数对TC11钛合金微观组织中α相的比例、β转变组织的板条尺寸和残余压应力大小影响明显,随EST脉冲数的提升,α相含量及板条状β转变组织中次生α相含量呈现先增加后减少的趋势。经最佳工艺参数(900 A、50 Hz、25个脉冲)脉冲电流冲击处理后,TC11钛合金中α相细小均匀,β转变组织板条长度、厚度和间距较处理前试样分别减小了51.9%、58.0%和36.8%,此时合金力学性能提升最为明显:伸长率提高了12.7%,显微硬度增加了4.7%,残余压应力增加48.4%。
|
| 关 键 词： | 脉冲电流冲击 TC11钛合金 显微组织 力学性能 |
| 收稿时间： | 2020-07-20 |
Effect of electropulse shocking treatment on microstructure and properties of TC11 titanium alloy |
| |
| Wang Zhongqi,Song Yanli,Hua Lin,Yu Yongqing. Effect of electropulse shocking treatment on microstructure and properties of TC11 titanium alloy[J]. Heat Treatment of Metals, 2020, 45(12): 29-35. DOI: 10.13251/j.issn.0254-6051.2020.12.006 |
| |
| Authors: | Wang Zhongqi Song Yanli Hua Lin Yu Yongqing |
| |
| Affiliation: | 1. Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology,Wuhan Hubei 430070, China;2. Hubei Collaborative Innovation Center for Automotive Components Technology,Wuhan University of Technology, Wuhan Hubei 430070, China |
| |
| Abstract: | Effect of electropulse shocking treatment(EST) on microstructure and mechanical properties of TC11 titanium alloy was studied by means of metallographic microscope, scanning electron microscope, X-ray diffractometer, universal material testing machine and microhardness tester. The results show that the ratio of α phase in the microstructure of TC11 titanium alloy, the lath size of β transformation structure and residual compressive stress are significantly affected by different pulse numbers. With the increase of EST pulse number, the content of α phase and the content of secondary α phase in lath like β transformation structure increase firstly and then decrease. After treated by the ETC with the best process parameters (900 A, 50 Hz, 25 pulses), the α phase in the TC11 titanium alloy is fine and uniform, and the length, thickness and spacing of β transformation lath are reduced by 51.9%, 58.0% and 36.8%, respectively, compared with those before treatment. At this time, the mechanical properties of TC11 titanium alloy are improved most obviously: elongation increased by 12.7%, microhardness increased by 4.7%, and residual compressive stress increased by 48.4%. |
| |
| Keywords: | electropulse-shocking TC11 titanium alloy microstructure mechanical properties |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《金属热处理》浏览原始摘要信息 |
|
点击此处可从《金属热处理》下载免费的PDF全文 |
|
