Hydrogen trapping on lattice defects produced by high-pressure torsion in Fe-0.01 mass% C alloy

被引：28

作者：

Mine, Yoji ^{[1
,2
]}

Tsumagari, Takayuki ^{[1
]}

Horita, Zenji ^{[3
]}

机构：

[1] Kyushu Univ, Dept Mech Engn, Nishi Ku, Fukuoka 8190395, Japan

[2] Natl Inst Adv Ind Sci & Technol, Res Ctr Hydrogen Ind Use & Storage HYDROGENIUS, Nishi Ku, Fukuoka 8190395, Japan

[3] Kyushu Univ, Dept Mat Sci & Engn, Nishi Ku, Fukuoka 8190395, Japan

来源：

SCRIPTA MATERIALIA | 2010年 / 63卷 / 05期

关键词：

Hydrogen; High-pressure torsion; Grain boundaries; Dislocations; SEVERE PLASTIC-DEFORMATION; IRON; MARTENSITE; STEELS;

D O I：

10.1016/j.scriptamat.2010.05.027

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Hydrogen trapping in Fe-0 01 mass% C with ultrafine-grained structures produced by high-pressure torsion (HPT) was investigated by thermal desorption spectrometry Hydrogen trapping in body-centred cubic iron was significantly increased by HPT processing through introduction of lattice defects such as vacancies, dislocations and grain boundaries Decreasing the density of vacancies, dislocations and low-angle gram boundaries by post-HPT annealing is effective in reducing the trapped hydrogen while the hardness remains enhanced through gram refinement with high-angle boundaries (C) 2010 Acta Materialia Inc Published by Elsevier Ltd All rights reserved.

引用

页码：552 / 555

页数：4

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