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| 热循环温度对Ti-6Al-4V合金组织和力学性能的影响 | |
| 引用本文： | 李文鹏,陈永楠,李中伟,魏建锋,赵永庆. 热循环温度对Ti-6Al-4V合金组织和力学性能的影响[J]. 材料热处理学报, 2012, 33(1): 106-109 |
| 作者姓名： | 李文鹏 陈永楠 李中伟 魏建锋 赵永庆 |
| 作者单位： | 1. 河北省电力研究院,河北石家庄,050021 2. 长安大学材料科学与工程学院,陕西西安,710064 3. 西安交通大学金属材料强度国家重点实验室,陕西西安,710049 4. 西北有色金属研究院,陕西西安,710016 |
| 基金项目： | 国家重点基础研究发展计划资助项目 |
| 摘 要： | 对上限温度为500、650、800℃高温短时热循环200次后的Ti-6Al-4V合金室温力学性能和组织进行了研究。结果表明:循环温度对合金强度影响较为明显,循环温度的升高使合金抗拉强度降低;分析认为:温度高于650℃,实验合金组织中β相逐渐分解碎化,β相含量减少和α晶粒逐渐长大是强度降低的主要原因。 |
| 关 键 词： | 热循环 Ti-6Al-4V合金 组织 力学性能 |
Influence of thermal cycling temperature on microstructure and mechanical properties of Ti-6Al-4V alloy |
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| LI Wen-peng,CHEN Yong-nan,LI Zhong-wei,WEI Jian-feng,ZHAO Yong-qing. Influence of thermal cycling temperature on microstructure and mechanical properties of Ti-6Al-4V alloy[J]. Transactions of Materials and Heat Treatment, 2012, 33(1): 106-109 | |
| Authors: | LI Wen-peng CHEN Yong-nan LI Zhong-wei WEI Jian-feng ZHAO Yong-qing |
| Affiliation: | 1.Hebei Electric Power Research Institute,Shijiazhuang 050021 China; 2.School of Materials Science and Engineering,Chang’an University,Xi’an 710064,China; 3.State Key Laboratory for Mechanical Behavior of Materials,Xi’an Jiaotong University,Xi’an 710049,China; 4.Northwest Institute for Nonferrous Metal Research,Xi’an 710016,China) |
| Abstract: | Microstructure and tensile properties of Ti-6Al-4V alloy after thermal cycling in the temperature range of room temperature to 500 ℃,650 ℃ and 800 ℃ were studied.The results show that with increasing of thermal cycling temperature,tensile strength of Ti-6Al-4V alloy decreases,β phase disintegrates and its volume fraction is reduced,and α grain grows gradually.It is argued that when cycling temperature below 650 ℃,the disintegration of β phase is responsible for the strength decreasing and when temperature above 650 ℃,the strength decreasement is ascribed to the decrease of β phase amount and α grains growth. |
| Keywords: | thermal cycling Ti-6A1-4V alloy microstructure mechanical properties |
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