Ti-6Al-4V型材的显微组织及性能研究

滕奎

doi:10.7513/j.issn.1004-7638.2023.03.012

Ti-6Al-4V型材的显微组织及性能研究

doi: 10.7513/j.issn.1004-7638.2023.03.012

滕奎

中国商飞上海飞机设计研究院, 上海 201210

详细信息

作者简介:
滕奎，1983年出生，男，吉林人，硕士研究生，高级工程师，通讯作者，主要工作方向为金属材料，E-mail：tengkui@comac.cc

中图分类号: TF823
计量
- 文章访问数: 92
- HTML全文浏览量: 115
- PDF下载量: 12
- 被引次数: 0
出版历程
- 收稿日期: 2022-01-26
- 刊出日期: 2023-06-30

Study on property and microstructure of Ti-6Al-4V extrusion

Teng Kui

Shanghai Aircraft Design and Research Institute, COMAC, Shanghai 201210, China

摘要

摘要: 为了研究截面形式及尺寸对钛合金型材的静力性能、损伤疲劳性能水平及其显微组织的影响，采用不同厚度截面的对比评价方法，对Ti-6Al-4V合金型材不同厚度截面的静力拉伸性能、疲劳及损伤容限性能进行研究，并对不同截面型材的微观组织进行了对比分析。结果表明，拉伸性能随着截面厚度尺寸的增大而降低，断裂韧性随厚度尺寸增大而升高，厚截面尺寸的“T”型材的疲劳性能和平面应变断裂韧性最高。不同截面尺寸的Ti-6Al-4V合金型材，厚截面尺寸型材的晶界组织较为明显，降低了静强度性能的同时提升了疲劳及损伤容限性能，因此静强度性能随着型材截面厚度尺寸的增大而降低，疲劳性能、断裂韧性、断后伸长率和断面收缩率随截面厚度尺寸的增大而提高。工程用钛合金Ti-6Al-4V型材可参考静强度、疲劳性能、断裂韧性及成形性能与截面厚度的对应关系进行型材零件外形设计。
- Ti-6Al-4V /
- 型材 /
- 截面形状 /
- 微观组织 /
- 力学性能
Abstract: Properties and microstructure tests were carried out in Ti-6Al-4V extrusion under different transections to investigate the strength, damage tolerance and fatigue behaviors of different thickness of extrusion, as well as the contrastive analysis on microstructure of Ti-6Al-4V extrusion. The results indicate that tensile strength is lower while the thickness is higher, the fracture toughness is higher while the thickness is higher, the ‘T’ extrusion with higher thickness has higher fatigue and fracture toughness properties. In thicker cross-section of Ti-6Al-4V extrusion, there are clear grain boundary structures, and the mechanical properties are lower while fatigue and fracture toughness performances are higher, therefore, Ti-6Al-4V extrusion parts could be designed referring to the relationship between material properties and cross-section thickness in engineering.
- Ti-6Al-4V /
- extrusion /
- cross-section /
- microstructure /
- mechanical property

HTML全文

图 1 拉伸试样示意（单位：mm）

Figure 1. Dimension of tensile specimen

下载: 全尺寸图片幻灯片

图 2 疲劳试样示意（单位：mm）

Figure 2. Dimension of fatigue specimen

下载: 全尺寸图片幻灯片

图 3 平面应变断裂韧性试样示意（单位：mm）

Figure 3. Dimensions of KIC specimen

下载: 全尺寸图片幻灯片

图 4 不同厚度截面形式的低倍组织

Figure 4. Macrostructures of different cross-sections of extrusion

下载: 全尺寸图片幻灯片

图 5 金相组织检验结果

Figure 5. Metallographic structures of different cross-sections of extrusion

下载: 全尺寸图片幻灯片

图 6 不同截面厚度型材的拉伸性能

Figure 6. Tensile properties of different cross-sections of extrusion

下载: 全尺寸图片幻灯片

图 7 不同截面型材疲劳S-N曲线

Figure 7. S-N curves of different cross-sections of extrusion

下载: 全尺寸图片幻灯片

参考文献(11)

[1]	Zhu Zhishou, Wang Xinnan, Tong Lu, et al. Studies of new-type titanium alloys for aviation industry application in China[J]. Titanium Industry Progress, 2007,(6):28−32. (朱知寿, 王新南, 童路, 等. 中国航空结构用新型钛合金研究[J]. 钛工业进展, 2007,(6):28−32. doi: 10.3969/j.issn.1009-9964.2007.06.004 Zhu Zhishou, Wang Xinnan, Tong Lu, et al. Studies of new-type titanium alloys for aviation industry application in China[J]. Titanium Industry Progress, 2007(6): 28-32 doi: 10.3969/j.issn.1009-9964.2007.06.004
[2]	Yu W X, Li M Q, Luo J. Effect of processing parameterson microstructure and mechanical properties in high temperature deformation of Ti-6Al-4V alloy[J]. Rare Met. Mater. Eng., 2009,38(1):19. doi: 10.1016/S1875-5372(10)60015-X
[3]	Zhu Liwei, Wang Xinnan, Zhu Zhishou. Effect of heat treatment on microstructure and mechanical properties of TC4-DT alloy[J]. Titanium Industry Progress, 2012,29(1):9−12. (祝力伟, 王新南, 朱知寿. 不同热处理工艺下TC4-DT钛合金的显微组织及力学性能[J]. 钛工业进展, 2012,29(1):9−12. doi: 10.3969/j.issn.1009-9964.2012.01.003 Zhu Liwei, Wang Xinnan, Zhu Zhishou. Effect of heat treatment on microstructure and mechanical properties of TC4-DT alloy[J]. Titanium Industry Progress, 2012, 29(1): 9-12 doi: 10.3969/j.issn.1009-9964.2012.01.003
[4]	Zhou Wei, Qu Henglei, Zhao Yongqing, et al. Microstructure and mechanical properties of TC4-DT alloy after different heat treatments[J]. Heat Treatment of Metals, 2006,31(6):56−57. (周伟, 曲恒磊, 赵永庆, 等. TC4-DT合金不同热处理后的组织与性能[J]. 金属热处理, 2006,31(6):56−57. doi: 10.3969/j.issn.0254-6051.2006.06.015 Zhou Wei, Qu Henglei, Zhao Yongqing, et al. Microstructure and mechanical properties of TC4-DT alloy after different heat treatments[J]. Heat Treatment of Metals, 2006, 31(6): 56-57 doi: 10.3969/j.issn.0254-6051.2006.06.015
[5]	Gu Xiaohui, Liu Jun, Shi Jihong. Influence of quenching and aging temperature on microstructure and mechanical properties of TC4 titanium alloy[J]. Heat Treatment of Metals, 2011,36(2):29−33. (顾晓辉, 刘君, 石继红. 淬火、时效温度对TC4钛合金组织和力学性能的影响[J]. 金属热处理, 2011,36(2):29−33. doi: 10.13251/j.issn.0254-6051.2011.02.006 Gu Xiaohui, Liu Jun, Shi Jihong. Influence of quenching and aging temperature on microstructure and mechanical properties of TC4 titanium alloy[J]. Heat Treatment of Metals, 2011, 36(2): 29-33 doi: 10.13251/j.issn.0254-6051.2011.02.006
[6]	Yang Haiying, Chen Jun, Zhao Yongqing. Effect of heat treatment on microstructure and mechanical properties of TC4-DT alloy[J]. Development and Application of Materials, 2009,24(2):13−16. (杨海瑛, 陈军, 赵永庆. 热处理对TC4-DT钛合金组织性能的影响[J]. 材料开发与应用, 2009,24(2):13−16. doi: 10.3969/j.issn.1003-1545.2009.02.004 Yang Haiying, Chen Jun, Zhao Yongqing. Effect of heat treatment on microstructure and mechanical properties of TC4-DT alloy[J]. Development and Application of Materials, 2009, 24(2): 13-16 doi: 10.3969/j.issn.1003-1545.2009.02.004
[7]	Wang Xinying, Xie Chengmu. Heat treatment technology for improving properties of ZTi6Al4V alloy[J]. Special Casting & Nonferrous Alloys, 2001,(6):16−17. (王新英, 谢成木. 改善ZTi6Al4V合金性能的热处理工艺[J]. 特种铸造及有色合金, 2001,(6):16−17. doi: 10.3321/j.issn:1001-2249.2001.06.007 Wang Xinying, Xie Chengmu. Heat treatment technology for improving properties of ZTi6 Al4 V alloy[J]. Special Casting & Nonferrous Alloys, 2001(6): 16-17 doi: 10.3321/j.issn:1001-2249.2001.06.007
[8]	Yang Jianjun, Li Baoxia. Influence of heat treatment process on microstructure and mechanical properties of hot-extruded TC4 titanium alloy T profile[J]. Titanium Industry Progress, 2015,(5):31−33. (杨建军, 李宝霞. 热处理对热挤压TC4钛合金T型材组织和性能的影响[J]. 钛工业进展, 2015,(5):31−33. doi: 10.13567/j.cnki.issn1009-9964.2015.05.012 Yang Jianjun, Li Baoxia. Influence of heat treatment process on microstructure and mechanical properties of hot-extruded TC4 titanium alloy T profile[J]. Titanium Industry Progress, 2015(5): 31-33 doi: 10.13567/j.cnki.issn1009-9964.2015.05.012
[9]	Li Xiaogang, Tong Xuewen. Effects of extruding technology on microstructure and property of TA15 alloy[J]. Titanium Industry Progress, 2010,(3):30−31. (李小刚, 佟学文. 挤压工艺对TA15型材组织和性能的影响[J]. 钛工业进展, 2010,(3):30−31. doi: 10.3969/j.issn.1009-9964.2010.03.007 Li Xiaogang, Tong Xuewen. Effects of extruding technology on microstructure and property of TA15 alloy[J]. Titanium Industry Progress, 2010(3): 30-31 doi: 10.3969/j.issn.1009-9964.2010.03.007
[10]	Zhang Yongqiang, Feng Yongqi. Study of extrusion process for TC4 tube[J]. Rare Metals Letters, 2006,25(10):27−29. (张永强, 冯永琦. TC4合金管材挤压成型工艺研究[J]. 稀有金属快报, 2006,25(10):27−29. Zhang Yongqiang, Feng Yongqi. Study of extrusion process for TC4 tube[J]. Rare Metals Letters, 2006, 25(10): 27-29
[11]	张明杰, 齐立春, 黄利军, 等. TA15钛合金挤压薄壁型材拉伸性能及差异性研究[J]. 钛工业进展, 2020(5): 7-11. Zhang Mingjie, Qi Lichun, Huang Lijun, et al. Difference research on tensile properties of TA15 titanium alloy thin profile prepared by hot extrusion[J]. Titanium Industry Progress, 2020(5): 7-11.