Paper Title:
Influence of Solution Treatment on Microstructure and Quench Cracking in a Water-Quenched Aluminium Alloy 7150
  Abstract

In this work, the influence of multi-step solution (MSS) treatments on the constituent particle dissolution, overheating and associated quench cracking behaviour in room temperature water-quenched 7150 Al alloy has been investigated. For comparison, the microstructure and quench cracking behaviour of single step solution treated samples water-quenched from 505°C were also investigated. Based on optical microscopy of differently quenched samples, the quench cracking mode and the influence of overheating of constituents on the quench cracking behaviour have been demonstrated. The results reveal that the constituent particles can be effectively dissolved in the MSS-505°C samples. When the quench temperature of MSS-505°C samples is equal to or higher than 485°C , macro quench cracks can be clearly observed. Moreover, the density and length of the quench cracks increase with increasing quench temperature. Etched microstructures indicate that the quench crack propagation mode is intergranular. However, for samples directly heated to 505°C , typical overheating can be observed at the triple junctions and these regions preferentially act as crack propagation routes.

  Info
Periodical
Materials Science Forum (Volumes 654-656)
Main Theme
Edited by
Jian-Feng Nie and Allan Morton
Pages
934-937
DOI
10.4028/www.scientific.net/MSF.654-656.934
Citation
D. K. Xu, P. A. Rometsch, H. Chen, B. C. Muddle, "Influence of Solution Treatment on Microstructure and Quench Cracking in a Water-Quenched Aluminium Alloy 7150", Materials Science Forum, Vols. 654-656, pp. 934-937, 2010
Online since
June 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: C. Triveño Rios, S.F. Santos, Walter José Botta, Claudemiro Bolfarini, Claudio Shyinti Kiminami
103
Authors: Won Yong Kim, Han Sol Kim, In Dong Yeo
Abstract:We report on advanced β-titanium alloys having excellent biocompatibility without containing V or Al that has been known as a toxic element...
858
Authors: Han Sol Kim, Won Yong Kim
Abstract:Mechanical Property and elastic modulus of Ti-Nb based alloys with various Si content, prepared by water quenching from high temperature β...
1427
Authors: Xin Yu Lu, Zhi Hui Li, Guo Jun Wang, Yon Gan Zhang, Bai Qing Xiong
Chapter 2: Aluminium Alloys
Abstract:The quench sensitivity of 2D70 aluminum alloy was investigated by end-quenching. The effect of water temperature on quench sensitivity was...
346
Authors: Xia Qu, Ying Chun Wang, Xing Wang Cheng, Shuang Zan Zhao, Shu Kui Li
Chapter 1: Alloy and Nanometer Materials
Abstract:An investigation was made to determine the effect of austenizing temperature on microstructure and tensile properties of Cr-W-Ni-alloy steel....
26