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Ductility loss of hydrogen-charged and releasing 304L steel
Yanfei WANG, Jianming GONG, Yong JIANG, Wenchun JIANG, Wang JIANG
《机械工程前沿(英文)》 2013年 第8卷 第3期 页码 298-304 doi: 10.1007/s11465-013-0265-7
The mechanical properties and fracture behavior of 304L austenitic stainless steel after cathodic hydrogen charging and hydrogen spontaneously releasing are investigated by tensile tests. Flat tensile specimens were cathodic hydrogen charged at various current densities. For each density, two specimens were charged at the same condition. When the charging process completed, one specimen was tensile immediately to fracture and the other was aged to release the hydrogen out of it and then was also tensile to fracture. The resulting tensile properties and micrographs of fracture surfaces of these specimens were evaluated and compared. The results show ductility loss occurred in the hydrogen-charged specimens and the loss increased as the current density increasing. After hydrogen releasing, the specimens recovered a certain extent but not all of its original ductility. Scanning electron microscope (SEM) micrographs of fracture surfaces reveal that irreversible damage had developed in the hydrogen-releasing specimens during the releasing process rather than the charging process. This consequence can be ascribed to the high tensile stress caused by non-uniform hydrogen distribution during hydrogen releasing.
关键词: hydrogen embrittlement ductility loss hydrogen releasing control strategy 304L austenitic stainless steel
Hot-dip galvanizing of cold-formed steel hollow sections: a state-of-the-art review
Min SUN, Jeffrey A. PACKER
《结构与土木工程前沿(英文)》 2019年 第13卷 第1期 页码 49-65 doi: 10.1007/s11709-017-0448-0
关键词: cold-formed steel hollow structural sections hot-dip galvanizing embrittlement heat-treatment residual stress cracking
标题 作者 时间 类型 操作
Ductility loss of hydrogen-charged and releasing 304L steel
Yanfei WANG, Jianming GONG, Yong JIANG, Wenchun JIANG, Wang JIANG
期刊论文