Study of Crack Initiation of 15-15Ti Austenitic Steel in Liquid PbBi

被引：6

作者：

Hojna, Anna ^{[1
]}

Di Gabriele, Fosca ^{[1
]}

Chocholousek, Michal ^{[1
]}

Spirit, Zbynek ^{[1
]}

Rozumova, Lucia ^{[1
]}

机构：

[1] Ctr Vyzkumu Rez Sro, UJV Grp, Rez 130, Husinec 25068, Czech Republic

来源：

JOURNAL OF NUCLEAR ENGINEERING AND RADIATION SCIENCE | 2019年 / 5卷 / 03期

关键词：

heavy liquid metals; generation IV nuclear systems; austenitic stainless steel; environmentally assisted cracking; liquid metal embrittlement; PbBi;

D O I：

10.1115/1.4041564

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The austenitic steel 15-15Ti is being considered as one of the candidate materials for internal structural components of future heavy liquid metal (HLM) nuclear systems. This work studies the steel compatibility with liquid PbBi. Constant extension rate tensile (CERT) tests of tapered specimens were used to study sensitivity to liquid metal embrittlement (LME) and crack initiation. The taper creates a variation of stress along the gauge length which allows the identification of the stress and strain for the crack appearance. Testing was performed in air and in PbBi with 10(-6) to 10(-12) wt % oxygen content at 300 degrees C. Post-test observation by scanning electron microscopy (SEM) highlighted the crack morphology. An evaluation of the environmental effect on the crack initiation is presented.

引用

页数：8

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