| 引用本文: | 王亮,吴晓明,王富鑫,骆良顺,苏彦庆,史亚鸣,郭景杰,傅恒志.热处理对Ti-6Al-2.5V-1.5Fe-0.15O合金组织及力学性能的影响[J].材料科学与工艺,2017,25(1):10-15.DOI:10.11951/j.issn.1005-0299.20160224. |
| WANG Liang,WU Xiaoming,WANG Fuxin,LUO Liangshun,SU Yanqing,SHI Yaming,GUO Jingjie,FU Hengzhi.Effect of heat treatment on microstructure and mechanical property of Ti-6Al-2.5V-1.5Fe-0.15O alloy[J].Materials Science and Technology,2017,25(1):10-15.DOI:10.11951/j.issn.1005-0299.20160224. |
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| 热处理对Ti-6Al-2.5V-1.5Fe-0.15O合金组织及力学性能的影响 |
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王亮1,吴晓明2,王富鑫1,骆良顺1,苏彦庆1,史亚鸣3,郭景杰1,傅恒志1
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(1.金属精密热加工国家级重点实验室(哈尔滨工业大学),哈尔滨 150001;2.西安航天发动机厂,西安 710100; 3.云南省钛材应用产品工程技术研究中心,云南 楚雄 651209)
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| 摘要: |
| 以真空非自耗电弧炉制备的低成本Ti-6Al-2.5V-1.5Fe-0.15O合金为对象，研究了不同冷却速率下固溶及时效温度对合金组织及性能的影响,发现固溶温度主要影响初生α相的含量.固溶冷却方式影响α的类型.单相区固溶时，初生α相消失，β晶粒内出现α片层集束,固溶淬火组织主要由残余未转变的β相以及针状的α′;随着固溶温度的升高，针状马氏体α′相增多;两相区固溶后，时效组织均有固溶时产生的α相、时效α相以及残留的β相.时效温度较低时，α相形核能较低，元素扩散困难，需借助过饱和β相析出弥散相形核，因而针状α相细小而弥散;时效温度升高，α相形核以及长大驱动力大，时效α相易长大变粗.经固溶时效处理，合金强度随着温度升高先小幅升高后显著降低，塑性先增大后因晶界粗化以及粗片状α集束而降低.
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| 关键词: Ti合金 固溶温度 时效温度 合金组织 力学性能 |
| DOI：10.11951/j.issn.1005-0299.20160224 |
| 分类号:TG146.2 |
| 文献标识码:A |
| 基金项目:云南省省院省校科技合作专项项目(2013IB006)；国家自然科学基金资助(2,5). |
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| Effect of heat treatment on microstructure and mechanical property of Ti-6Al-2.5V-1.5Fe-0.15O alloy |
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WANG Liang1,WU Xiaoming2,WANG Fuxin1, LUO Liangshun1, SU Yanqing1, SHI Yaming3, GUO Jingjie1, FU Hengzhi1
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(1.National Key Laboratory for Precision Hot Processing of Metals(Harbin Institute of Technology), Harbin 150001, China; 2.Xi′an Space Engine Factory, Xi′an 710100, China; 3.Engineering Technology Research Center of Titanium Products and Application of Yunnan Province, Chuxiong 651209, China)
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| Abstract: |
| The effect of solid solution temperature and aging temperature in different cooling rates on microstructure and mechanical properties of Ti-6Al-2.5V-1.5Fe-0.15O alloy prepared by vacuum non-consumable arc melting process was studied. It was found that solid solution temperature mainly affects the content of primary α, and the type of solid solution cooling method has important effect on the type of primary α. Aging temperature will change the morphology of aging α phase. When the single phase zone is in solid solution, primary α phase disappears. The structure of the alloy after solid solution quenching is mainly composed of the residual phase and the needle like α′. With the increase of solid solution temperature,
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| Key words: Ti alloy solution temperature aging temperature microstructure mechanical property 收稿日期: 2016-07-11.网络出版时间: 2017-01-05. 基金项目: 云南省省院省校科技合作专项项目(2013IB006) 国家自然科学基金资助(2,5).作者简介: 王亮(1981—),男,博士,副教授 苏彦庆(1969—),男,教授,博士生导师,长江学者特聘教授 |
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