铱脆性的研究进展（英文）
发布时间：2018-07-17 01:47
【摘要】：由于铱的高熔点、优异的高温强度和抗腐蚀性能,是能够在极端恶劣条件下使用的唯一金属。虽然铱具有面心立方晶体结构,但它的断裂模式却为脆性断裂(穿晶脆性断裂和沿晶脆性断裂的混合断裂模式)。自从20世纪60年代人们发现了铱的异常脆性断裂行为以来,就展开了大量的研究工作。然而至今,关于铱的致脆机制仍未被澄清。本文综述了铱可能的致脆机制:杂质致脆、本征脆性和特殊缺陷结构致脆,讨论了铱变形与失效机制的研究现状,并对未来研究的重点与手段进行了展望。
[Abstract]:Due to the high melting point of iridium , excellent high - temperature strength and corrosion resistance , it is the only metal that can be used in extremely severe conditions . Although iridium has a surface - centered cubic crystal structure , its fracture pattern is brittle fracture ( brittle fracture and mixed fracture mode along the brittle fracture ) . So far , the brittleness mechanism of iridium has not been clarified . However , the research status of iridium deformation and failure mechanism is discussed in this paper .
【作者单位】： 昆明理工大学稀贵及有色金属先进材料教育部重点实验室
【基金】：Yunnan Provincial Innovation Team(2009CI003) National Natural Science Foundation of China(51361016)
【分类号】：TG146.34
[Abstract]:Due to the high melting point of iridium , excellent high - temperature strength and corrosion resistance , it is the only metal that can be used in extremely severe conditions . Although iridium has a surface - centered cubic crystal structure , its fracture pattern is brittle fracture ( brittle fracture and mixed fracture mode along the brittle fracture ) . So far , the brittleness mechanism of iridium has not been clarified . However , the research status of iridium deformation and failure mechanism is discussed in this paper .
【作者单位】： 昆明理工大学稀贵及有色金属先进材料教育部重点实验室
【基金】：Yunnan Provincial Innovation Team(2009CI003) National Natural Science Foundation of China(51361016)
【分类号】：TG146.34
【共引文献】
相关期刊论文 前10条
1 向长淑;葛渊;张晗亮;李增峰;黄愿平;汤慧萍;;耐超高温铱合金强韧化技术研究进展[J];材料导报;2009年13期
2 张t，
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