王书亮,付朝政,陈雨婷,刘丽,付春艳,黄艺雄,向定汉,蒋小松.固溶处理后预变形对 Ti-6Al-4V Alloy时效行为和机械性能的影响[J].稀有金属材料与工程,2020,49(7):2198~2206.[Wang Shuliang,Fu Chaozheng,Chen Yuting,Liu Li,Fu Chunyan,Huang Yixiong,Xiang Dinghan,Jiang Xiaosong.Effect of Pre-deformation on the Aging Behavior and Mechanical Properties of Ti-6Al-4V Alloy[J].Rare Metal Materials and Engineering,2020,49(7):2198~2206.]
固溶处理后预变形对 Ti-6Al-4V Alloy时效行为和机械性能的影响
投稿时间:2019-03-30  修订日期:2019-07-01
中文关键词:  Ti-6Al-4V合金  预变形,时效,机械性能
基金项目:福建省材料基因重点实验室开放课题(厦门大学),广西省信息材料重点实验室开放基金(桂林电子科技大学),四川省高等学校油气田材料重点实验室开放基金(西南石油大学,X151518KCL23)
中文摘要:
      本文研究了固溶处理后预变形对Ti-6Al-4V合金时效行为和机械性能的影响。结果显示在940 °C 和 955 °C固溶处理后进行预变形,可以提高时效过程中第二相α的析出。在940 °C固溶处理后,随着预变形量的增加,时效处理后第二相α含量增加,α相尺寸减小,合金的强度和硬度增加。在时效处理之前进行预变形可以明显提高合金的拉伸强度和硬度,也能同时保持比较好的韧性。相对固溶温度为940 °C来说, Ti-6Al-4V合金在955 °C固溶处理后进行预变形,对于提高合金的强度和硬度的效果不显著。本文采用扫描电镜对不同预变形和时效处理后的合金断口形貌进行了分析。
Effect of Pre-deformation on the Aging Behavior and Mechanical Properties of Ti-6Al-4V Alloy
英文关键词:Ti-6Al-4V alloy  pre-deformation  aging  mechanical properties
英文摘要:
      The effects of pre-deformation on the aging behavior and mechanical properties of Ti-6Al-4V alloy were studied. Results show that the addition of pre-deformation after the solution process at 940 °C and 955 °C is beneficial in promoting the precipitation of the secondary α phase during the aging of Ti-6Al-4V alloy. When solution temperature was 940 °C, the content of the secondary α phase increased with an increase in pre-deformation amount, its size decreased, and the strength and hardness of the alloy increased monotonously after aging. The tensile strength and hardness of Ti-6Al-4V alloy after aging were evidently higher with pre-deformation than without pre-deformation. Simultaneously, excellent plasticity was maintained. In the case with added pre-deformation, a solution temperature of 955 °C slightly improved the strength and hardness of Ti-6Al-4V alloy compared with a solution temperature of 940 °C. Scanning electron microscopy examinations indicate that the fracture modes of all aged alloys with varying pre-deformation degrees are ductile fracture.
作者单位E-mail
王书亮 西南石油大学材料科学与工程学院 wsliang1465@126.com 
付朝政 School of Materials Science and Engineering,Southwest Petroleum University  
陈雨婷 School of Materials Science and Engineering,Southwest Petroleum University  
刘丽 School of Materials Science and Engineering,Southwest Petroleum University  
付春艳 School of Materials Science and Engineering,Southwest Petroleum University  
黄艺雄 College of Materials and Fujian Provincial Key Laboratory of Materials Genome,Xiamen University  
向定汉 Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology  
蒋小松   
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