EXPERIMENTAL INVESTIGATION OF HYDROGEN EFFECT ON MECHANICAL PROPERTIES OF 304L STAINLESS STEEL

被引：0

作者：

Jiang, Yong ^{[1
]}

Gong, Jianming ^{[1
]}

Tang, Jianqun ^{[1
]}

Geng, Luyang ^{[1
]}

机构：

[1] Nanjing Univ Technol, Coll Mech & Power Engn, Nanjing 210009, Peoples R China

来源：

PROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2008, VOL 6, PT A AND B | 2009年

关键词：

Stainless steel; Hydrogen charging; Hydrogen embrittlement; Mechanical property; STRESS-CORROSION CRACKING; MECHANOCHEMICAL ANODIC-DISSOLUTION; EMBRITTLEMENT;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Hydrogenation reactor is one of the key equipments in the production process of purified terephthalic acid (PTA). The safe and reliable operation of hydrogenation reactor decides the safety of PTA installation. Service experience has shown that some longitudinal cracks occurred on the internal wall of the 304L stainless steel(SS) hydrogen nozzle. In this paper, a series of electrochemical hydrogen charging tests were carried out for 304L stainless steel at the ambient temperature. The comparison on mechanical properties was investigated before and after hydrogen charging in order to investigate the effect of mechanical properties of 304L SS. Fractography was analyzed by using scanning electron microscope (SEM). The results showed that the mechanical strength of 304L SS was not basically lost after hydrogen charging, but the ductility reduced in a certain extent. The fractography also showed the hydrogen embrittlement effect on the fracture.

引用

页码：211 / 216

页数：6

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