Effect of radial hydride on room temperature fracture toughness of Zr-2.5Nb pressure tube material

被引：7

作者：

Gopalan, Avinash ^{[1
]}

Bind, A. K. ^{[1
]}

Sunil, Saurav ^{[1
]}

Murty, T. N. ^{[1
]}

Sharma, R. K. ^{[2
]}

Samanta, Akanksha ^{[3
]}

Soren, Amit ^{[4
]}

Singh, R. N. ^{[1
]}

机构：

[1] Bhabha Atom Res Ctr, Mech Met Div, Mumbai 400085, Maharashtra, India

[2] Nucl Power Corp India Ltd, Engn Directorate, Mumbai 400094, Maharashtra, India

[3] Bhabha Atom Res Ctr, Post Irradiat Examinat Div, Mumbai 400085, Maharashtra, India

[4] BIT Sindri, Dept Met Engn, Dhanbad 828123, Bihar, India

来源：

JOURNAL OF NUCLEAR MATERIALS | 2021年 / 544卷

关键词：

Zr-2.5Nb alloy; pressure tubes; radial hydride; HCC; fracture toughness; HYDROGEN CONTENT; STRESS; REORIENTATION; INITIATION; ZIRCONIUM; CRACKING; AMBIENT;

D O I：

10.1016/j.jnucmat.2020.152681

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of radial hydride on the room temperature fracture toughness of the Zr-2.5Nb pressure tube material with 100% radial hydrides and hydrogen content up to 320wppm was investigated using curved compact tension (CCT) specimens. The hydride continuity coefficients (HCC) representing hydrogen content and hydride orientation were determined between 0 and 1. It was observed that the role of plastic deformation on the fracture toughness mechanism decreases with increase in HCC. On a semi-log scale the fracture toughness of the Zr-2.5Nb pressure tube varied linearly with HCC at room temperature and this is characteristic feature for the Zirconium alloys. (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：12

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