Tuning Strain Localization in Polycrystalline Nickel-Based Superalloys by Thermomechanical Processing

被引：3

作者：

Charpagne, M. A. ^{[1
]}

Stinville, J. C. ^{[1
]}

Polonsky, A. T. ^{[1
]}

Echlin, M. P. ^{[1
]}

Murray, S. P. ^{[1
]}

Chen, Z. ^{[1
]}

Bozzolo, N. ^{[3
]}

Cormier, J. ^{[2
]}

Valle, V. ^{[2
]}

Pollock, T. M. ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Mat Dept, Santa Barbara, CA 93106 USA

[2] ENSMA, ISAE, CNRS, UPR 3346,Inst Pprime, 1 Ave Clement Ader,BP 40109, F-86961 Futuroscope, France

[3] PSL Res Univ, MINES ParisTech, CEMEF Ctr Mise Forme Mat, CNRS,UMR 7635, CS 10207 Rue Claude Daunesse, F-06904 Sophia Antipolis, France

来源：

SUPERALLOYS 2020 | 2020年

关键词：

Nickel-based superalloy; Slip bands; Annealing twin boundaries; Primary gamma' precipitates; 3D microstructure; DIGITAL IMAGE CORRELATION; SCANNING-ELECTRON-MICROSCOPY; FATIGUE-CRACK INITIATION; CYCLE FATIGUE; IDENTIFICATION;

D O I：

10.1007/978-3-030-51834-9_46

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Thermomechanical processing routes are used to produce microstructures that minimize plastic strain localization at the sub-grain scale in a polycrystalline gamma - gamma' nickel-based superalloy. This novel approach is made possible by the use of innovative experimental tools and statistical data analysis that capture slip events over large representative fields of view. Results are correlated to conventional observations of fatigue crack initiation and early stage of propagation. The effect of coherent twin boundaries and primary gamma' precipitates on fatigue properties and plastic localization is detailed.

引用

页码：471 / 481

页数：11

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