Microstress evolution during in situ loading of a superalloy containing high volume fraction of γ′ phase

被引：38

作者：

Ma, S

Rangaswamy, P

Majumdar, BS ^{[1
]}

机构：

[1] New Mexico Inst Min & Technol, Dept Mat & Met Engn, Socorro, NM 87801 USA

[2] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

SCRIPTA MATERIALIA | 2003年 / 48卷 / 05期

关键词：

superalloy; microstress; neutron diffraction; yielding; elastic constants;

D O I：

10.1016/S1359-6462(02)00504-3

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Pulsed neutron diffraction under in situ mechanical loading was used to monitor microstrain evolution in individual phases of a polycrystalline gamma/gamma' superalloy, CM 247 LC. The load partitioning and yielding of differently oriented grains and phases were evaluated. The critical resolved shear stresses of individual phases were obtained and are compared with dislocation models. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：525 / 530

页数：6

共 10 条

[1]

Bacon G. E., 1975, NEUTRON DIFFRACTION

[2]

COPLEY SM, 1967, T METALL SOC AIME, V239, P984

[3] A two phase elastic-plastic self-consistent model for the accumulation of microstrains in Waspaloy [J].