Interaction of Hydrogen and Retained Austenite in Bainite/Martensite Dual-Phase High Strength Steel

GU Jia-lin; CHANG Kai-di; FANG Hong-sheng; YANG Zhi-gang; BAI Bing-zhe

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Interaction of Hydrogen and Retained Austenite in Bainite/Martensite Dual-Phase High Strength Steel

机译：贝氏体/马氏体双相高强度钢中氢与残余奥氏体的相互作用

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The hydrogen trapping phenomena in two bainite/martensite dual-phase high strength steels (U20Si and U20DSi) were investigated by electrochemical permeation technique. The hydrogen diffusivity was calculated from data of permeation delay time, and the diffusion coefficient in U20Si is far less than that in U20DSi. Moreover, the hydrogen diffusivity decreases as the volume percent of retained austenite increases. The experiment results show that there are different hydrogen trappings and different volume percents of retained austenite in U20Si and U20DSi. The retained austenite is precipitated as films. The trap binding energy for the retained austenite and hydrogen is calculated to be 40.4 kJ·mol-1.

机译：通过电化学渗透技术研究了两种贝氏体/马氏体双相高强度钢（U20Si和U20DSi）中的氢捕获现象。根据渗透延迟时间的数据计算氢的扩散率，U20Si中的扩散系数远小于U20DSi中的扩散系数。而且，氢扩散率随着残留奥氏体的体积百分比的增加而降低。实验结果表明，U20Si和U20DSi中存在不同的氢陷阱和不同的残余奥氏体体积百分比。残留的奥氏体以膜状析出。残余奥氏体和氢的陷阱结合能经计算为40.4 kJ·mol-1。

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来源
《钢铁研究学报（英文版）》 |2004年第1期|42-46|共5页
作者
GU Jia-lin; CHANG Kai-di; FANG Hong-sheng; YANG Zhi-gang; BAI Bing-zhe;
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Tsinghua University, Beijing 100084, China;

Shougang Research Institute of Technology, Beijing 100041, China;

Tsinghua University, Beijing 100084, China;

Tsinghua University, Beijing 100084, China;

Tsinghua University, Beijing 100084, China;

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bainite; martensite; dual-phase high strength steel; electrochemical permeation technique; diffusion coefficient; retained austenite; trap binding energy;

机译：贝氏体马氏体双相高强度钢电化学渗透技术扩散系数残余奥氏体陷阱能;

Interaction of Hydrogen and Retained Austenite in Bainite/Martensite Dual-Phase High Strength Steel

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