| 梯形波周期加载下超高强度钢的氢致断裂 |
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| 引用本文： | 罗恩洲,刘民治,肖耀天,陈廉. 梯形波周期加载下超高强度钢的氢致断裂[J]. 金属学报, 1988, 24(1): 55-57 |
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| 作者姓名： | 罗恩洲 刘民治 肖耀天 陈廉 |
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| 作者单位： | 湖南大学应用物理系，成都科技大学金属材料系，中国科学院金属研究所，中国科学院金属研究所 副研究员，沈阳文化路 |
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| 摘 要： | 钢的氢脆研究,目前大部分都采用拉伸、持久和断裂韧性测试等方法。这些方法,对于促进氢脆机理的研究和工程应用都起了重要的作用。但在工程上,大部分动部件所受载荷都是交变的,而不是受静载拉伸。所以,也有人认为用低周疲劳来评价氢脆敏感性要比慢拉伸和静持久更为切合实际。我们选择了最简单的交变方式,即梯形波加载代替纯持久加载,以探讨疲劳因子对氢致滞后破坏的影响。
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| 关 键 词： | 梯形波加载 位错输运 氢致断裂 |
| 收稿时间： | 1988-01-18 |
| 修稿时间： | 1988-01-18 |
HYDROGEN-INDUCED FRACTURE OF A SUPER-HIGH STRENGTH STEEL UNDER CYCLIC LOAD OF LADDER WAVEFORM |
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| LUO Enzhou,LIU Minzhi,XIAO Yaotian University,Changsha,Chengdu University of Science and Technology. HYDROGEN-INDUCED FRACTURE OF A SUPER-HIGH STRENGTH STEEL UNDER CYCLIC LOAD OF LADDER WAVEFORM[J]. Acta Metallurgica Sinica, 1988, 24(1): 55-57 |
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| Authors: | LUO Enzhou LIU Minzhi XIAO Yaotian University Changsha Chengdu University of Science Technology |
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| Affiliation: | LUO Enzhou,LIU Minzhi,XIAO Yaotian University,Changsha,Chengdu University of Science and Technology,Institute of Metal Research,Academia Sinica,Shenyang CHEN Lian Hunan Assoctate Professor,Institute of Metal Research,Academia Sinice,Shenyang |
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| Abstract: | Hydrogen-induced fracture of electrolytic charged, sharp notched specimens ofsuper-high strength steel 30CrMnSiNi2A has been studied by means of cyclic ladder waveformloading tests and SEM examination. The results show that the time to fracture decreases withthe decrease of dwell period of the load. It was considered that hydrogen transported by disloca-tions significantly effects the hydrogen-induced delayed fracture of the steel. |
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| Keywords: | ladder waveform loading dislocation transport hydrogen-induced fracture |
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