Paper Title:
Precipitation Behavior of γ" in Severely Plastic Deformed Ni-Base Alloys
  Abstract

The precipitation behaviors of γ″(Ni3Nb) in four Ni-base alloys were investigated. The four alloys were forged Ni20Cr20Fe5Nb alloy, mechanically alloyed Ni20Cr20Fe5Nb alloy, IN 718 alloy and ECAPed(equal channel angular pressing) IN 718 alloy. Aging treatment was employed at either 600°C or 720°C for 20 hrs. The TEM observation and hardness test were performed to identify the formation of γ″. The precipitation of γ″ was noticed after aging at 600°C for 20 hrs in the mechanically alloyed Ni20Cr20Fe5Nb alloy and ECAPed IN 718 alloy, while it was observed after aging at 720°C for 20 hrs in the forged Ni20Cr20Fe5Nb alloy and IN 718 alloy before ECAP. It seemed that the lower aging temperature for γ″ precipitation in the mechanically alloyed Ni20Cr20Fe5Nb alloy and ECAPed IN 718 alloy than in the forged Ni20Cr20Fe5Nb alloy and IN 718 alloy before ECAP appeared to be due to the severe plastic deformation which occurred during mechanical alloying or ECAP.

  Info
Periodical
Materials Science Forum (Volumes 534-536)
Edited by
Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim
Pages
213-216
DOI
10.4028/www.scientific.net/MSF.534-536.213
Citation
I. H. Kim, S.I. Kwun, "Precipitation Behavior of γ" in Severely Plastic Deformed Ni-Base Alloys", Materials Science Forum, Vols. 534-536, pp. 213-216, 2007
Online since
January 2007
Authors
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: J.K. Kim, Dong-Seok Chung, H.S. Park, Manabu Enoki
Abstract:The effect of beryllium (Be) on the precipitation behaviors and mechanical properties of Al–Cu–Li–Mg–Zr–(Ag) alloys was investigated. The...
381
Authors: Z. Horita
Abstract:The process of severe plastic deformation (SPD) makes it possible to reduce the grain size to the submicrometer or nanometer range in many...
1485
Authors: Tatsuaki Sakamoto, Yuri Hiagaki, Sengo Kobayashi, Kiyomichi Nakai
Abstract:Precipitation behavior of a metastable β Ti alloy, Ti-6.8Mo-4.5Fe-1.5Al(masss%), during two-step aging has been investigated. Supersaturated...
461
Authors: Hong Wei Yan, Liang Zhen, Jian Tang Jiang
Chapter 9: Metals and Alloys in Industrial Applications
Abstract:Strengthening of aluminum alloy has always been an interesting research topic. There might be interactions between different strengthening...
1014
Authors: T.H. Liu, Sheng Ping Wen, Xiao Lan Wu, Kun Yuan Gao, Hui Huang, W. Wang, Zuo Ren Nie
Chapter 3: Thermo-Mechanical Processing
Abstract:To investigate the effect of cold-rolling and aging on precipitation and recrystallization behavior of Al-0.04Er-0.08Zr (at. %) alloy, two...
310