| 固态金属致脆裂纹的萌生与致脆原子输运机制 |
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| 引用本文： | 刘道新,刘双梅,何家文.固态金属致脆裂纹的萌生与致脆原子输运机制[J].西安交通大学学报,1999,33(4):57-60. |
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| 作者姓名： | 刘道新 刘双梅 何家文 |
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| 作者单位： | 1. 西安交通大学,710049,西安
2. 西北,工业大学 |
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| 摘 要： | 提出了利用锥形试样，以离子束增强沉积银实现银与试样表面接触，并通过慢应变速率拉伸加载，确定了Ｔｉ６Ａ１４Ｖ合金固体银致脆裂纹萌生应力，萌生应变、萌生寿命和裂纹扩展临界应力强度因子的方法。
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| 关 键 词： | 分形维数 裂纹萌生 金属 致脆金属原子 致脆裂纹 |
| 修稿时间： | 1998-05-19 |
Crack Initiation Behavior and Embrittler Transport Mechanism for Embrittlement of Ti6Al4V |
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| Liu Daoxin,Liu Shuangmei,He Jiawen.Crack Initiation Behavior and Embrittler Transport Mechanism for Embrittlement of Ti6Al4V[J].Journal of Xi'an Jiaotong University,1999,33(4):57-60. |
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| Authors: | Liu Daoxin Liu Shuangmei He Jiawen |
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| Abstract: | Few methods can be used to determine the crack initiation behavior in solid metal induced embrittlement (SMIE). The mechanisms of embrittler transport in SMIE have not been clearly understood. A method is developed for determining crack initiation stress, strain, life and cracking threshold intensity factor of solid silver induced embrittlement of Ti6Al4V alloy. Examined are the fractographic characteristics of embrittled Ti6Al4V using fractal geometry. Mistakes made in the open literature for calculating the surface diffusion rate associated with embrittled surface are corrected based on analysis of the fractal feature of diffusion path of the embrittlement agent. |
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| Keywords: | titanium alloy metal induced embrittlement fractal dimension crack initiation diffusion |
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