| 氢致开裂的TEM原位拉伸观察与研究 |
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| 引用本文： | 陈奇志,李成华.氢致开裂的TEM原位拉伸观察与研究[J].北京科技大学学报,1996,18(2):168-173. |
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| 作者姓名： | 陈奇志 李成华 |
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| 作者单位： | 北京科技大学材料物理系 |
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| 摘 要： | 通过对颈充氢３１０不风薄膜在透射电镜（ＴＥＭ）下的原位拉伸观察，并和不含氢试样的结果相比较，研究了氢在韧－脆转变中的作用及氢致脆断机理，结果表明，氢使奥氏体不锈钢由韧变脆的根本原因是氢降低了微裂纹形核时的临界应力强度因子，从而抑制ＤＦＺ中纳米级微裂纹向空洞的转化。
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| 关 键 词： | 氢致脆断 微裂纹 原位观察 不锈钢 TEM |
TEM in-situ Observation of Hydrogen-induced Cracking |
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| Chen Qizhi,Li Chenghua,Chu Wuyang, Wang Yanbin,Hiao Jinmei.TEM in-situ Observation of Hydrogen-induced Cracking[J].Journal of University of Science and Technology Beijing,1996,18(2):168-173. |
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| Authors: | Chen Qizhi Li Chenghua Chu Wuyang Wang Yanbin Hiao Jinmei |
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| Abstract: | The effect of hydrogen on the cracking of type 310 stainless steel was studied by TEM in situ observation of hydrogen-charged specimens and comparison with the hydrogen-free specimens.The results show that the effect of hydrogen on the change from ductile to brittle is to prevent nano cracks in DFZs from blunting into voids. |
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| Keywords: | hydrogen-induced brittle crack microcrack TEM in situ observation dislocation dislocation free zone steel 310 |
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