Paper Title:
Grain Boundary Precipitation and Tensile Ductility of Fe-Mn-Ni Alloys
  Abstract

The mechanism of grain boundary embrittlement and the improvement of the tensile ductility afforded by alloy addition or heat treatment was investigated in an Fe-Mn-Ni alloy. The precipitation of θ-MnNi intermetallic particles was observed at the prior austenite or interlath boundaries during the aging treatment and this was believed to be responsible for the grain boundary embrittlement of these alloys. After prolonged aging or aging at higher temperatures above 520°C, these metastable intermetallic particles were transformed into the thermodynamically stable austenite phase, thereby leading to the recovery of the grain boundary strength. The addition of Mo caused the grain boundary precipitate to be changed to austenite and resulted in a significant improvement in the tensile ductility after aging.

  Info
Periodical
Materials Science Forum (Volumes 539-543)
Main Theme
Edited by
T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran
Pages
1595-1600
DOI
10.4028/www.scientific.net/MSF.539-543.1595
Citation
Y. U. Heo, S. H. Mun, H. C. Lee, "Grain Boundary Precipitation and Tensile Ductility of Fe-Mn-Ni Alloys", Materials Science Forum, Vols. 539-543, pp. 1595-1600, 2007
Online since
March 2007
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: Wee Do Yoo, Jong Hoon Lee, Kuk Tae Youn, Young Mok Rhyim
Abstract:The microstructures and mechanical properties of 17-4 PH stainless steel at each steps of heat treatment, such as homogenizing, solid...
15
Authors: Keiyu Nakagawa, Teruto Kanadani
Abstract:In this paper, we investigated effects of aging at 473K on the relationship between microstructure in the vicinity of the grain boundaries...
821
Authors: Zhong Bo Zhou, Jin Shan Li, Hong Chao Kou, Zhi Shou Zhu, Bin Tang, Hui Chang
Abstract:In order to develop a perspective of the new metastable β titanium alloy——TB-13, the influence of ageing treatments on the microstructure and...
859
Authors: Prachya Peasura, Bovornchok Poopat
Abstract:The Inconel X-750 indicates good hot corrosion resistance, high stability and strength at high temperatures and for this reason the alloy is...
108