| Ti-6Al-4Cr（Mo）合金热处理显微组织的研究 |
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| 引用本文： | 李聪,陈江华,刘春辉,伍翠兰,赵新奇,葛鹏,赵永庆.Ti-6Al-4Cr（Mo）合金热处理显微组织的研究[J].电子显微学报,2010,29(2):110-118. |
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| 作者姓名： | 李聪 陈江华 刘春辉 伍翠兰 赵新奇 葛鹏 赵永庆 |
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| 作者单位： | 1. 湖南大学材料科学与工程学院,高分辨电镜中心,湖南,长沙,410082
2. 西北有色金属研究院,陕西,西安,710016 |
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| 基金项目： | 国家973课题(2009CB23704、2008CB617608和2007CB613805);;国防基础研究资助项目 |
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| 摘 要： | 本文采用扫描电镜与透射电镜分析研究了Ti-6Al-4Cr和Ti-6Al-4Mo合金固溶和时效过程中显微组织的变化。结果表明：Ti-6Al-4Cr和Ti-6Al-4Mo合金经过相似的两相区固溶处理后,组织差别较大;两种合金经过β相区固溶后再时效,形成典型的魏氏组织,且硬度值较两相区处理的样品有很大提高;两种合金在相同热处理制度下,硬度值变化趋势相似,但前者的硬度值明显大于后者;Ti-6Al-4Cr合金在各种热处理条件下都有富Cr的固溶体区产生,经过1000℃/45min/空冷＋600℃/2h/空冷处理后,有Laves相和界面相析出。
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| 关 键 词： | Ti-6Al-4Cr和Ti-6Al-4Mo合金 固溶时效 显微组织 |
Microstructures of Ti-6Al-4Cr(Mo)alloys during heat treatments |
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| LI Cong,CHEN Jiang-hua,LIU Chun-hui,WU Cui-lan,ZHAO Xinqi,GE Peng,ZHAO Yong-qing.Microstructures of Ti-6Al-4Cr(Mo)alloys during heat treatments[J].Journal of Chinese Electron Microscopy Society,2010,29(2):110-118. |
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| Authors: | LI Cong CHEN Jiang-hua LIU Chun-hui WU Cui-lan ZHAO Xinqi GE Peng ZHAO Yong-qing |
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| Affiliation: | 1.Hunan University,College of Material Science and Engineerin,Centre for High Resolution Electron Microscope,Changsha Hunan 410082;2.Northwest Institute for Non-ferrous Metal Research,Xi’an Shangxi 710016,China) |
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| Abstract: | Microstructures of Ti-6Al-4Cr and Ti-6Al-4Mo alloys during the solid solution and aging were studied by SEM and TEM.The results showed that after α /β solution treatment,Ti-6Al-4Cr and Ti-6Al-4Mo alloys showed different microstructures.A similar Widmanstatten formed in two alloys after β solution and aging treatments.Their hardness greatly increased.Under the same heat- treatment system,the hardness of Ti-6Al-4Cr and Ti-6Al-4Mo alloys had a similar varying trend,but the former was significantly higher than the latter.There were some Cr solid solution in Ti-6Al-4Cr alloy.After 1 000 ℃ /45 min AC ＋ 600 ℃ /2 h AC treatments,Laves phase and interface phase appeared in Ti-6Al-4Cr. |
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| Keywords: | Ti-6Al-4Cr and Ti-6Al-4Mo alloys solution and aging treatments microstructure |
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