The effects of thermomechanical history on the microstructure of a nickel-base superalloy during forging

被引：16

作者：

Gardner, S. ^{[1
]}

Li, W. ^{[2
]}

Coleman, M. ^{[1
]}

Johnston, R. ^{[1
]}

机构：

[1] Swansea Univ, Coll Engn, Bay Campus, Swansea SA1 8EN, W Glam, Wales

[2] Rolls Royce plc, POB 31, Derby DE24 8BJ, England

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2016年 / 668卷

基金：

英国工程与自然科学研究理事会;

关键词：

HAYNES (R) 282 (R); Interrupted hot compression; Grain growth; Recrystallization; Annealing;

D O I：

10.1016/j.msea.2016.05.051

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of thermo-mechanical history on hot compression behaviour and resulting microstructures of a nickel base superalloy is presented. Hot compression tests were carried out on HAYNES (R) 282 (R) specimens to varying strains from 0.1 to 0.8. Both single pass and multi-pass tests were completed. 60 min inter-pass times were utilized to accurately replicate industrial forging practices. The effect of dynamic, metadynamic and static recrystallization during inter-pass times on flow stress was investigated. The resulting microstructures were analysed using scanning electron, optical microscopy and EBSD to relate grain size and homogeneity with flow stress data. The study showed a negligible difference between multi-pass and single pass tests for strain increments above 0.2. Therefore, when modelling similar low strain and strain rate forging processes in HAYNES (R) 282 (R), previous forging steps can be ignored. (C) 2016 The Authors. Published by Elsevier B.V.

引用

页码：263 / 270

页数：8

共 19 条

[1]

ASTM International, 2007, ASTM E407-07e1: standard practice for microetching metals and alloys, VPA

[2]

Chen Xiao.-Min., 2014, MAT DES

[3]

Ding Hanlin, 2010, COMP MATER SCI, P919

[4]

Jaeger J., 2012, P 12 INT S SUP

[5]

Jonas J.J., 1981, MET T

[6]

Lin Y.C., 2011, COMPUT MAT SCI

[7]

Liu J., 2013, MAT SCI ENG A

[8]

Longanbach S.C., 2011, MAT SCI ENG A

[9]

Maghsoudi M.H., 2014, MAT DES

[10]

Mataya M.C., 1991, J MINER MET MAT SOC

← 1 2 →