skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Precipitation in a Cu–Cr–Zr–Mg alloy during aging

Abstract

The precipitation processes in a Cu-0.69Cr-0.10Zr-0.02Mg alloy aged at 450 °C and 550 °C have been investigated by transmission electron microscopy and high resolution transmission electron microscopy. The precipitation sequence in this alloy aged at 450 °C is: supersaturated solid solution → Guinier–Preston zone (fcc Cr-rich phase) → ordered fcc Cr-rich phase → ordered bcc Cr-rich phase. The precipitation sequence in this alloy aged at 550 °C is: supersaturated solid solution → ordered fcc Cr-rich phase → ordered bcc Cr-rich phase. In the evolution of decomposition, the orientation relationship between the precipitates and the Cu matrix changes from cube-on-cube to Nishiyama–Wassermann orientation. The ordering of Cr-rich precipitates facilitates the formation of the bcc precipitates and promotes the development of Nishiyama–Wassermann orientation. - Highlights: • Two different precipitation sequences in the Cu–Cr–Zr–Mg alloy are proposed. • The changes in orientation relationship of the precipitates are presented. • The roles of ordering and coherent interface of the precipitates are discussed.

Authors:
;
Publication Date:
OSTI Identifier:
22285057
Resource Type:
Journal Article
Journal Name:
Materials Characterization
Additional Journal Information:
Journal Volume: 81; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1044-5803
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALLOYS; BCC LATTICES; CHROMIUM; COPPER; FCC LATTICES; MAGNESIUM; SOLID SOLUTIONS; TEMPERATURE RANGE 0400-1000 K; TRANSMISSION ELECTRON MICROSCOPY; ZIRCONIUM

Citation Formats

Cheng, J.Y., E-mail: bigchengjianyi@163.com, Shen, B., and Yu, F. X. Precipitation in a Cu–Cr–Zr–Mg alloy during aging. United States: N. p., 2013. Web. doi:10.1016/J.MATCHAR.2013.04.008.
Cheng, J.Y., E-mail: bigchengjianyi@163.com, Shen, B., & Yu, F. X. Precipitation in a Cu–Cr–Zr–Mg alloy during aging. United States. doi:10.1016/J.MATCHAR.2013.04.008.
Cheng, J.Y., E-mail: bigchengjianyi@163.com, Shen, B., and Yu, F. X. Mon . "Precipitation in a Cu–Cr–Zr–Mg alloy during aging". United States. doi:10.1016/J.MATCHAR.2013.04.008.
@article{osti_22285057,
title = {Precipitation in a Cu–Cr–Zr–Mg alloy during aging},
author = {Cheng, J.Y., E-mail: bigchengjianyi@163.com and Shen, B. and Yu, F. X.},
abstractNote = {The precipitation processes in a Cu-0.69Cr-0.10Zr-0.02Mg alloy aged at 450 °C and 550 °C have been investigated by transmission electron microscopy and high resolution transmission electron microscopy. The precipitation sequence in this alloy aged at 450 °C is: supersaturated solid solution → Guinier–Preston zone (fcc Cr-rich phase) → ordered fcc Cr-rich phase → ordered bcc Cr-rich phase. The precipitation sequence in this alloy aged at 550 °C is: supersaturated solid solution → ordered fcc Cr-rich phase → ordered bcc Cr-rich phase. In the evolution of decomposition, the orientation relationship between the precipitates and the Cu matrix changes from cube-on-cube to Nishiyama–Wassermann orientation. The ordering of Cr-rich precipitates facilitates the formation of the bcc precipitates and promotes the development of Nishiyama–Wassermann orientation. - Highlights: • Two different precipitation sequences in the Cu–Cr–Zr–Mg alloy are proposed. • The changes in orientation relationship of the precipitates are presented. • The roles of ordering and coherent interface of the precipitates are discussed.},
doi = {10.1016/J.MATCHAR.2013.04.008},
journal = {Materials Characterization},
issn = {1044-5803},
number = ,
volume = 81,
place = {United States},
year = {2013},
month = {7}
}