| Au-Ti(-Y)足金断裂行为的研究 |
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| 引用本文： | 杨青青,熊惟皓,张杰,兰永忠,潘明.Au-Ti(-Y)足金断裂行为的研究[J].机械工程材料,2005,29(5):33-35. |
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| 作者姓名： | 杨青青 熊惟皓 张杰 兰永忠 潘明 |
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| 作者单位： | 1. 华中科技大学模具技术国家重点实验室,湖北,武汉,430074
2. 湖北金兰首饰集团有限公司,湖北,枣阳,441200 |
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| 基金项目： | 湖北省重点科技计划发展资助项目(971P0216) |
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| 摘 要： | 用拉伸试验机、扫描电镜、透射电镜等研究了Au-Ti(-Y)足金的拉伸性能和断裂行为。结果表明：Au-Ti(-Y)足金的断裂方式是微孔聚集型断裂；微量钛和钇可以显著细化Au-Ti(-Y)足金基体晶粒。经过时效处理，可弥散析出体心正方结构TiAu4粒子，并能部分甚至全部消除冷拉过程中产生的残余内应力，从而使Au-Ti(-Y)足金的强度和韧度得到提高。
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| 关 键 词： | 足金 热处理 微孔聚集型断裂 细晶强化 |
| 文章编号： | 1000-3738(2005)05-0033-03 |
Fracture Behaviour of Au-Ti(-Y) Alloys with a Minimum of 99. 0 Mass Percent Au |
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| YANG Qing-qing,XIONG Wei-hao,ZHANG Jie,LAN Yong-zhong,PAN Ming.Fracture Behaviour of Au-Ti(-Y) Alloys with a Minimum of 99. 0 Mass Percent Au[J].Materials For Mechanical Engineering,2005,29(5):33-35. |
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| Authors: | YANG Qing-qing XIONG Wei-hao ZHANG Jie LAN Yong-zhong PAN Ming |
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| Abstract: | The tensile properties and fracture behaviour of Au-Ti(-Y) alloys with a minimum of 99. 0 mass% Au have been investigated by using tensile tester, SEM and TEM. Experiment results show that fracture behaviour of Au-Ti(-Y) alloys with a minimum of 99. 0 mass% Au was microvoid accumulation fracture, and that trace Ti and Y could refine significantly grains of their matrix. And the dispersive TiAu4 particles could precipitate and part or all residual cold-drawing stress could be released during aging. These enable the Au-Ti(-Y) alloys with a minimum of 99. 0 mass% Au to achieve both high strength and ductility. |
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| Keywords: | gold alloy with a minimum of 99 0 mass percent Au heat treatment microvoid accumulation fracture grain refining strengthening |
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