Microstructure Changes in Alloy AZ31B in Semisolid State and Its Mechanical Properties
-
Published:2006-10
Issue:
Volume:116-117
Page:159-162
-
ISSN:1662-9779
-
Container-title:Solid State Phenomena
-
language:
-
Short-container-title:SSP
Author:
Ji Ze Sheng1,
Sugiyama Sumio2,
Yanagimoto Jun2
Affiliation:
1. Harbin University of Science and Technology
2. University of Tokyo
Abstract
The structural changes of the wrought magnesium alloy AZ31B in semisolid state were
clarified using optical microscopy and hot-stage microscopy. The influence of heat treatment
variables was assessed. Compression tests covering a range from room temperature to 673 K were
carried out for mechanical property assessment; flow stress and breaking strain were determined. The
following are the results: (1) The grain growth of the hot-extruded AZ31B without preprocessing
sensitively reacted at temperature and retention time. (2) The hot-extruded AZ31B with 30 %
preprocessing showed an almost perfectly spheroidized structure in a semisolid state under certain
conditions. (3) Heating velocity markedly affected the spheroidizing rate of grains. (4) From the
direct observation of the hot-extruded alloy AZ31B by hot-stage microscopy, spheroidization was
observed in some crystal populations. (5) Spheroided materials in the semisolid temperature range
had a lower flow stress and a larger breaking strain than nonspheroidized materials. These results
indicate the possibility of manufacturing wrought magnesium alloy by cold working.
Publisher
Trans Tech Publications, Ltd.
Subject
Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献