| Cu-Cr-Zr合金时效析出相的研究 |
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| 引用本文： | 杨浩,陈江华,胡特,刘吉梓,陈刚,赵新奇,吴落义. Cu-Cr-Zr合金时效析出相的研究[J]. 电子显微学报, 2010, 29(4): 317-321 |
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| 作者姓名： | 杨浩 陈江华 胡特 刘吉梓 陈刚 赵新奇 吴落义 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金资助项目，国家基础研究计划资助项目 |
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| 摘 要： | 利用高分辨电子显微镜（HRTEM）及系列欠焦像出射波函数重构技术,探明了在大气环境下,Cu-Cr-Zr合金峰值时效时存在氧化物析出相。研究结果表明：Cu-Cr-Zr合金经950℃×1.5 h固溶处理、450℃时效6 h硬度达峰值;此时样品中除早期的具有花瓣状应变场衬度的共格析出相外,另一类强化相为圆盘状形貌的CuCrO2;该氧化物析出相为三方晶系,空间群为R 3 m（166）,与基体具有特定取向关系：[011]Cu//[010]CuCrO2,（111）Cu//（003）CuCrO2,惯习面为{111}Cu。
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| 关 键 词： | Cu-Cr-Zr合金 析出相 CuCrO2 晶体取向关系 |
A transmission electron microscopy study of the hardening precipitates in CuCrZr alloys |
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| YANG Hao,CHEN Jiang-hua,HU Te,LIU Ji-zi,CHEN Gang,ZHAO Xin-qi,WU Luo-yi. A transmission electron microscopy study of the hardening precipitates in CuCrZr alloys[J]. Journal of Chinese Electron Microscopy Society, 2010, 29(4): 317-321 |
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| Authors: | YANG Hao CHEN Jiang-hua HU Te LIU Ji-zi CHEN Gang ZHAO Xin-qi WU Luo-yi |
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| Affiliation: | YANG Hao,CHEN Jiang-hua,HU Te,LIU Ji-zi,CHEN Gang,ZHAO Xin-qi,WU Luo-yi(The center for High-Resolution Electron Microscopy in the College of Materials Science and Engineering,Hunan University,Changsha Hunan 410082,China) |
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| Abstract: | The evolution of the hardening precipitates during ageing has been studied by means of micro-hardness measurement and high resolution transsition electron microscopy examination.It has been found that the coherent Cr-phases with lobe-lobe contrast contribute to the micro-hardness at the earlier stages during ageing.On the other hand,the peak-hardness of Cu-Cr-Zr alloy is mainly contributed by the disc-shaped CuCrO2 particles in addition to the effect of Cr-particles.The CuCrO2 particles exhibit the fixed OR... |
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| Keywords: | CuCrO2 |
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