| 引用本文: | 王耀奇,侯红亮,李红.TI-6Al-4V合金置氢-除氢组织与力学性能[J].材料科学与工艺,2011,19(3):93-96.DOI:10.11951/j.issn.1005-0299.20110318. |
| WANG Yao-qi,HOU Hong-liang,LI Hong.Microstructure and mechanical properties of hydrogenated-dehydrogenated Ti-6Al-4V alloy[J].Materials Science and Technology,2011,19(3):93-96.DOI:10.11951/j.issn.1005-0299.20110318. |
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| 摘要: |
| 为研究除氢处理对置氢钛合金组织与性能的影响,对Ti-6Al-4V合金在不同参数条件下进行了置氢与除氢处理,采用光学显微镜分析了置氢-除氢处理过程中Ti-6Al-4V合金微观组织的演化规律,通过室温拉伸试验研究了置氢-除氢处理后Ti-6Al-4V合金的力学性能,探讨了Ti-6Al-4V合金置氢-除氢组织与力学性能之间的相关性.结果表明:Ti-6Al-4V合金置氢-除氢处理后,其微观组织与力学性能由置氢温度和氢的质量分数共同决定;氢质量分数为0.2%时,除氢后β相比例增加,材料的抗拉强度降低,而延伸率升高,延伸率最大增幅29.6%;氢质量分数为0.8%时,除氢后形成了魏氏组织,材料的强度升高,延伸率降低,抗拉强度最大提高100 MPa. |
| 关键词: Ti-6Al-4V合金 除氢 微观组织 力学性能 |
| DOI：10.11951/j.issn.1005-0299.20110318 |
| 分类号:TG146.23 |
| 基金项目: |
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| Microstructure and mechanical properties of hydrogenated-dehydrogenated Ti-6Al-4V alloy |
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WANG Yao-qi, HOU Hong-liang, LI Hong
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Beijing Aeronautical Manufacturing Technology Research Institute,Beijing 100024,China
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| Abstract: |
| To study the effect of dehydrogenated treatment on microstructure and mechanical properties of hydrogenated titanium alloy,Ti-6Al-4V alloy was hydrogenated and dehydrogenated under different parameters condition.Microstructure evolution of Ti-6Al-4V alloy was analyzed by optical microscopic during hydrogenated-dehydrogenated treatment.Mechanical properties of Ti-6Al-4V alloy were investigated by tensile test at room temperature after hydrogenated-dehydrogenated treatment.The correlation between the microstructure and mechanical properties was discussed.The results show that the microstructure and mechanical properties of Ti-6Al-4V alloy are determined by hydrogenated temperature and hydrogen content after hydrogenated-dehydrogenated treatment.When the mass ratio of hydrogen is 0.2%,after dehydrogenating,the βphase increases and the tensile strength decreases while the elongation increases by maximal 29.6%.When the mass ratio of hydrogen is 0.8%,after dehydrogenating,Widmanstaten structure forms and the tensile strength increases by maximal 100 MPa while the elongation decreases. |
| Key words: Ti-6Al-4V alloy dehydrogenation microstructure mechanical properties |
