کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1574805 | 1514727 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of pre-strain on hydrogen embrittlement of high strength steels
ترجمه فارسی عنوان
اثر پیش کشیدن بر ضعف هیدروژن فولاد با مقاومت بالا
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کلمات کلیدی
هراس هیدروژن، قبل از کشیدن، فولاد با مقاومت بالا
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
چکیده انگلیسی
The effect of the pre-strain on hydrogen embrittlement (HE) of high strength steels was investigated by slow strain-rate tensile (SSRT). The specimens were electrochemically hydrogen-charged in 0.5 mol/L H2SO4 with 1 g/L CH4N2S at room temperature for 24 h. It is found that the amount of hydrogen increases linearly with the exponent of pre-strain, i.e., CH=11.963+0.00385exp(1.144εP). The HE susceptibility of the alloy initially decreases and then increases with increasing pre-strain. The ultimate tensile strength for the hydrogen-charged specimen is highest in the 3% pre-strain, which is interpreted by competition between strain hardening and Hydrogen Enhanced Decohesion (HEDE) mechanism. The fracture mode shows a mixed mode fracture of quasi-cleavage and intergranular fracture for hydrogen-charged specimens while the fracture mode exhibits dimples for hydrogen-free specimens.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 616, 20 October 2014, Pages 116-122
Journal: Materials Science and Engineering: A - Volume 616, 20 October 2014, Pages 116-122
نویسندگان
Xinfeng Li, Yanfei Wang, Peng Zhang, Bo Li, Xiaolong Song, Jing Chen,