Effect of radial hydride on delayed hydride cracking behaviour of Zr-2.5Nb pressure tube material

被引：15

作者：

Sunil, Saurav ^{[1
]}

Gopalan, Avinash ^{[1
]}

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

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

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

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

来源：

JOURNAL OF NUCLEAR MATERIALS | 2020年 / 542卷

关键词：

Zr-2.5Nb PT material; Delayed hydride cracking; Radial hydride; Hydride continuity coefficient; STRESS INTENSITY FACTOR; THRESHOLD STRESS; HYDROGEN CONCENTRATION; FRACTURE-TOUGHNESS; ZIRCONIUM ALLOYS; NB; TEMPERATURE; EMBRITTLEMENT; REORIENTATION; ORIENTATION;

D O I：

10.1016/j.jnucmat.2020.152457

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Delayed Hydride Cracking (DHC) behaviour of Zr-2.5Nb Pressure Tube (PT) material used in Indian 200MWe Pressurised Heavy Water Reactor (PHWR) containing radial hydrides and circumferential hydrides was studied in the temperature range of 200-250 degrees C. A section of the PT was charged with 70wppm of hydrogen and successfully subjected to re-orientation treatment to form radial hydride. The radial hydride in the reoriented tube was characterised by the hydrogen continuity co-efficient (HCC). It was observed that the average DHC velocity (V-DHC) for the radial hydrided sample was 2.5 and 1.85 times faster than the circumferential hydrided sample at 200 and 225 degrees C, respectively. The V-DHC at the temperature of 250 degrees C, for both the radial hydrided and the circumferential hydrided sample were comparable. The average V-DHC for circumferential hydrided sample varies linearly with 1/T while it was observed to vary non-linearly with 1/T for radial hydrided sample. The V-DHC of the radial hydrided sample was observed to increase with increase in the stress intensity factor, whereas for circumferential hydrided samples the V-DHC was independent of stress intensity factor in the range of 18-45MPa.m(1/2). (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：13

共 48 条

[11]

gopalan A.K.B. A., 2020, EFFECT HYDRIDE CONTI

[12]

Grigoriev A.M.A.H.V., 2013, EXPT STUDY DHC UNIRR, P1543

[13]

IBRAHIM EF, 1985, CAN METALL QUART, V24, P273, DOI 10.1179/cmq.1985.24.3.273

[14] Multi-axial forging of Nb-1wt.%Zr: Effect of annealing on microstructure and mechanical properties [J].

Kapoor, Rajeev ;

Sarkar, Apu ;

Behera, Ananta N. ;

Sunil, Saurav .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2020, 772

[15] The texture dependence of KIH in Zr-2.5%Nb pressure tube materials [J].

Kim, SS .

JOURNAL OF NUCLEAR MATERIALS, 2006, 349 (1-2) :83-95

[16] The effect of texture variation on delayed hydride cracking behavior of Zr-2.5%Nb plate [J].

Kim, SS ;

Kwon, SC ;

Kim, YS .

JOURNAL OF NUCLEAR MATERIALS, 1999, 273 (01) :52-59

[17] KIH in radial textured Zr-2.5%Nb pressure tube [J].

Kim, SS ;

Kim, YS .

JOURNAL OF NUCLEAR MATERIALS, 2000, 279 (2-3) :286-292

[18]

LEGER M, 1985, CAN METALL QUART, V24, P235

[19]

Northwood D. O., 1983, International Metals Reviews, V28, P92

[20]

Northwood D.O., 1982, Journal Materials for Energy Systems, V4, P3

← 1 2 3 4 5 →