α→β Transformation characteristics revealed by pulsed laser-induced non-equilibrium microstructures in duplex-phase Zr alloy

被引：0

作者：

CHAI LinJiang ^{[1
]}

WANG Shu Yan ^{[1
]}

WU Hao ^{[1
]}

GUO Ning ^{[2
]}

PAN HuCheng ^{[3
]}

CHEN Liang Yu ^{[4
]}

MURTY K.L. ^{[5
]}

SONG Bo ^{[2
]}

机构：

[1] College of Materials Science and Engineering,Chongqing University of Technology

[2] Faculty of Materials and Energy,Southwest University

[3] Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education),Northeastern University

[4] School of Mathematics and Science,Jiangsu University of Science and Technology

[5] Department of Nuclear Engineering,North Carolina State University

来源：

Science China(Technological Sciences) | 2017年 / 60卷 / 08期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Zr alloy; microstructure; phase transformation; laser treatment; electron backscatter diffraction;

D O I：

暂无

中图分类号：

TG146.414 [];

学科分类号：

080502 ;

摘要：

Microstructures of a duplex-phase Zr-2.5Nb alloy treated by pulsed laser were characterized by electron backscatter diffraction(EBSD) and electron channeling contrast(ECC) imaging techniques.Major attention has been paid to non-equilibrium hybrid microstructure consisting of both prior a and β phases,and a plates transformed from new β phases to probe α→β transformation characteristics in the alloy.The origin of the hybrid microstructure is attributed to the specific thermodynamic conditions induced by the pulsed laser treatment.ECC observation shows that newly formed β phases during laser heating prefer to nucleate and grow at the expense of edges of prior a grains rather than their interiors.EBSD analyses further reveal that orientations of the new βphases are not determined by the prior a grains according to the Burgers relationship but maintain those of the prior β phases in an epitaxial growth way.

引用

页码：1255 / 1262

页数：8

共 29 条

[21] Microstructure and corrosion characteristics of Zr–1.5Nb–0.4Sn–0.2Fe–0.1Cr alloy with a β-annealing[J] . Hyun-Gil Kim,Jong-Hyuk Baek,Sun-Doo Kim,Young-Hwan Jeong.Journal of Nuclear Materials . 2007 (2)
[22] Development of local microstructure and crystallographic texture in extruded Zr–2.5Nb tubes[J] . Y. Li,R. Rogge,R.A. Holt.Materials Science ＆ Engineering A . 2006 (1)
[23] Phase boundary of the Zr-rich region in commercial grade Zr–Nb alloys[J] . Hyun-Gil Kim,Jeong-Yong Park,Yong-Hwan Jeong.Journal of Nuclear Materials . 2005 (1)
[24] Texture changes in the hcp＜ce:hsp sp="0.12"/＞→＜ce:hsp sp="0.12"/＞bcc＜ce:hsp sp="0.12"/＞→＜ce:hsp sp="0.12"/＞hcp transformation of zirconium studied in situ by neutron diffraction[J] . H.-R. Wenk,I. Lonardelli,D. Williams.Acta Materialia . 2004 (7)
[25] Study of the β→α variant selection for a zircaloy-4 rod heated to the β transus in presence or not of an axial tensile stress[J] . N. Gey,M. Humbert,E. Gautier,J.L. Béchade.Journal of Nuclear Materials . 2004 (2)
[26] In situ SEM-EBSD observations of the hcp to bcc phase transformation in commercially pure titanium[J] . G.G.E. Seward,S. Celotto,D.J. Prior,J. Wheeler,R.C. Pond.Acta Materialia . 2003 (4)
[27] Effect of quenching rate on the β-to-α phase transformation structure in zirconium alloy[J] . Journal of Nuclear Materials . 2003 (2)
[28] Study of the α/β phase transformation of Zy-4 in presence of applied stresses at heating: analysis of the inherited microstructures and textures[J] . N. Gey,E. Gautier,M. Humbert,A. Cerqueira,J.L. Bechade,P. Archambault.Journal of Nuclear Materials . 2002 (2)
[29] Morphology and substructure of lath martensites in dilute ZrNb alloys[J] . D. Srivastava,P. Mukhopadhyay,S. Banerjee,S. Ranganathan.Materials Science ＆ Engineering A . 2000 (1)

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