Lattice strain evolution in a high volume fraction polycrystal nickel superalloy

被引：32
作者：
Coakley, James [1 ]
Dye, David [1 ]
机构：
[1] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2AZ, England
来源：
SCRIPTA MATERIALIA | 2012年 / 67卷 / 05期
基金：
英国工程与自然科学研究理事会;
关键词：
Neutron diffraction; Superalloy; Nickel alloys; Internal stresses; CM247LC; NEUTRON-DIFFRACTION; BASE SUPERALLOY; CREEP; DEFORMATION; WASPALOY;
D O I：
10.1016/j.scriptamat.2012.05.015
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Lattice strain evolution is measured by neutron diffractrometry during tensile testing of a high volume fraction polycrystal nickel superalloy. The intergranular strains reveal anisotropic deformation, with the {200} plane being least stiff and the {111} being the stiffest. Initial plasticity is due to yielding of the {220}. Deconvolution of the {200} and {220} doublets reveals co-deformation of gamma and gamma' phases during plasticity. Comparisons are drawn with low and medium volume fraction superalloys. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：435 / 438
页数：4
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