Lattice strain evolution in a high volume fraction polycrystal nickel superalloy

被引：35

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

页码：435 / 438

页数：4

共 19 条

[1] Lattice strain evolution during creep in single-crystal superalloys [J].

Coakley, James ;

Reed, Roger C. ;

Warwick, Jonnathan L. W. ;

Rahman, Khandaker M. ;

Dye, David .

ACTA MATERIALIA, 2012, 60 (6-7) :2729-2738

[2] Creep and creep modelling of a multimodal nickel-base superalloy [J].

Coakley, James ;

Dye, David ;

Basoalto, Hector .

ACTA MATERIALIA, 2011, 59 (03) :854-863

[3]

Davis J.R., 1997, Heat-resistant materials

[4] Evidence of variation in slip mode in a polycrystalline nickel-base superalloy with change in temperature from neutron diffraction strain measurements [J].

Daymond, M. R. ;

Preuss, M. ;

Clausen, B. .

ACTA MATERIALIA, 2007, 55 (09) :3089-3102

[5] Elastoplastic deformation of ferritic steel and cementite studied by neutron diffraction and self-consistent modelling [J].

Daymond, MR ;

Priesmeyer, HG .

ACTA MATERIALIA, 2002, 50 (06) :1613-1626

[6]

Dye D., 2009, SCRIPTA MATER, V48, P525

[7]

HEYN E, 1914, I METALS J, V12, P3

[8] Thermal Relaxation of Residual Stresses in Nickel-Based Superalloy Inertia Friction Welds [J].

Karadge, M. ;

Grant, B. ;

Withers, P. J. ;

Baxter, G. ;

Preuss, M. .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2011, 42A (08) :2301-2311

[9] Microstrain evolution during creep of a high volume fraction superalloy [J].

Ma, S ;

Brown, D ;

Bourke, MAM ;

Daymond, MR ;

Majurndar, BS .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 399 (1-2) :141-153

[10] Microstress evolution during in situ loading of a superalloy containing high volume fraction of γ′ phase [J].

Ma, S ;

Rangaswamy, P ;

Majumdar, BS .

SCRIPTA MATERIALIA, 2003, 48 (05) :525-530

← 1 2 →