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Title: Development of Mg-6.0%Zn-1.0%Y-0.6%CE-0.6%Zr magnesium alloy and its microstructural evolution during processing

Abstract

A strong and ductile Mg-6.0%Zn-1.0%Y-0.6%Ce-0.6%Zr alloy was developed. The alloy was first cast into billets which were rapidly solidified into ribbons, comminuted and extruded. Some of the extrusions were subjected to reciprocal extrusion processing. The microstructures of the alloy prepared by the different processes were analyzed by optical microscopy (OM) as well as high resolution scanning electron microscopy (HRSEM) and transmission electron microscopy (TEM). The microstructure of the cast consisted of coarse grains with average grain size of about 45 {micro}m with intermetallic networks at grain boundaries. The microstructure of the extrusions made of rapidly solidified chips was not uniform; it was fine at the circumference, but coarser in the central area. A low density of defects in the form of unwelded rapidly solidified (RS) ribbon particles in the center of the extrusion was also present. The microstructure of the alloy subjected to reciprocating extrusion was more uniform with average grain size of 1.3 {micro}m and homogeneously dispersed strengthening particles 80 nm in diameter.

Authors:
; ; ;
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
965502
Report Number(s):
IS-J 7374
Journal ID: 0921-5093; TRN: US200919%%600
DOE Contract Number:  
DE-AC02-07CH11358
Resource Type:
Journal Article
Journal Name:
Materials Science and Engineering A
Additional Journal Information:
Journal Volume: 473; Journal Issue: 1-2
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALLOYS; DEFECTS; EXTRUSION; GRAIN BOUNDARIES; GRAIN SIZE; MAGNESIUM ALLOYS; MICROSTRUCTURE; OPTICAL MICROSCOPY; PROCESSING; RESOLUTION; SCANNING ELECTRON MICROSCOPY; TRANSMISSION ELECTRON MICROSCOPY

Citation Formats

Guo, X., Remennik, S., Xu, C., and Shechtman, D. Development of Mg-6.0%Zn-1.0%Y-0.6%CE-0.6%Zr magnesium alloy and its microstructural evolution during processing. United States: N. p., 2007. Web.
Guo, X., Remennik, S., Xu, C., & Shechtman, D. Development of Mg-6.0%Zn-1.0%Y-0.6%CE-0.6%Zr magnesium alloy and its microstructural evolution during processing. United States.
Guo, X., Remennik, S., Xu, C., and Shechtman, D. Fri . "Development of Mg-6.0%Zn-1.0%Y-0.6%CE-0.6%Zr magnesium alloy and its microstructural evolution during processing". United States.
@article{osti_965502,
title = {Development of Mg-6.0%Zn-1.0%Y-0.6%CE-0.6%Zr magnesium alloy and its microstructural evolution during processing},
author = {Guo, X. and Remennik, S. and Xu, C. and Shechtman, D.},
abstractNote = {A strong and ductile Mg-6.0%Zn-1.0%Y-0.6%Ce-0.6%Zr alloy was developed. The alloy was first cast into billets which were rapidly solidified into ribbons, comminuted and extruded. Some of the extrusions were subjected to reciprocal extrusion processing. The microstructures of the alloy prepared by the different processes were analyzed by optical microscopy (OM) as well as high resolution scanning electron microscopy (HRSEM) and transmission electron microscopy (TEM). The microstructure of the cast consisted of coarse grains with average grain size of about 45 {micro}m with intermetallic networks at grain boundaries. The microstructure of the extrusions made of rapidly solidified chips was not uniform; it was fine at the circumference, but coarser in the central area. A low density of defects in the form of unwelded rapidly solidified (RS) ribbon particles in the center of the extrusion was also present. The microstructure of the alloy subjected to reciprocating extrusion was more uniform with average grain size of 1.3 {micro}m and homogeneously dispersed strengthening particles 80 nm in diameter.},
doi = {},
journal = {Materials Science and Engineering A},
number = 1-2,
volume = 473,
place = {United States},
year = {2007},
month = {3}
}