Paper Title:
Effect of Thermomechanical Processes on Σ3 Grain Boundary Distribution in a Nickel Base Superalloy
  Abstract

According to various studies, Grain Boundary Engineering (GBE) is likely to enhance mechanical properties of polycrystalline materials. The present investigation highlights some relationships between thermomechanical process (TMP) parameters of a commercial nickel-base superalloy PER72, supplied by Aubert & Duval (equivalent to Udimet®720™) and the resulting microstructure. The long-term goal is to develop TMPs that modify the Grain Boundary Character Distributions (GBCD) in order to improve high temperature properties. In this context, Grain Boundary Engineering (GBE) techniques are considered, thinking of replacing standard forming processes by optimised thermomechanical treatments. Mechanical testing at high temperature (compression and torsion tests) has been carried out and it is shown that multi-step treatments promote twinning. Some clues are then presented in an attempt to explain when and how twins are created.

  Info
Periodical
Materials Science Forum (Volumes 638-642)
Main Theme
Edited by
T. Chandra, N. Wanderka, W. Reimers , M. Ionescu
Pages
2333-2338
DOI
10.4028/www.scientific.net/MSF.638-642.2333
Citation
N. Souaï, R. E. Logé, Y. Chastel, N. Bozzolo, V. Maurel, L. Nazé, "Effect of Thermomechanical Processes on Σ3 Grain Boundary Distribution in a Nickel Base Superalloy", Materials Science Forum, Vols. 638-642, pp. 2333-2338, 2010
Online since
January 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Hiroyuki Kokawa, Masahiko Shimada, Zhan Jie Wang, Yutaka S. Sato, M. Michiuchi
Abstract:Optimum parameters in the thermomechanical treatment during grain boundary engineering (GBE) were investigated for improvement of...
1005
Authors: Yong Nam Kwon, Young Seon Lee, J.H. Lee
Abstract:Thermomechanical behavior of Al-Mg-Si alloys has been studied to investigate the effect of microstructural features such as pre-existing...
581
Authors: Yong Quan Ning, Ze Kun Yao, Xing Hua Xie, Hong Zhen Guo
Abstract:Thermomechanical treatment (TMT) of PM FGH4096 superalloy were carried out to futher improve the mechanical strength and refine the γ’...
255
Authors: Shingo Kurosu, Yun Ping Li, Hiroaki Matsumoto, Akihiko Chiba
Abstract:Thermomechanical processes combined with reverse transformation from -hcp and M2N) dual-phase to -fcc phase of biomedical Co-Cr-Mo-N...
2184
Authors: Kornél Májlinger, Péter János Szabó
Abstract:During brazing of austenitic stainless steel with copper based brazing material a common failure occurs, namely that the brazing material...
442