%0 Journal Article
%T MICROSTRUCTURAL EVOLUTION OF AS-CAST ZA27 ALLOY DURING COMPRESSIVE CREEP
%A XWWei
%A BLShen
%A <br>X. W. Wei
%A and B.L.Shen
%J 金属学报(英文版)
%D 2003
%I 
%X Phase transformation and microstructural change of an as-cast ZA27 alloy were investigated during compressive creep by X-ray diffraction technique, SEM and TEM. Compressive creep induced decomposition of a metastable η' phase and a four-phase transformation,α+ε→T'+η and T'→θ, occurred during the compressive creep testing. The occurrence of negative creep in the alloy resulted from the volume expansion caused by the four-phase transformation. A microstructural change was also observed from a lamellar structure into a spheroidized structure in higher creep strain of tested specimens. It provided evidence of compressive creep induced phase transformation which occurred in ageing process.
%K microstructure change
%K compressive creep
%K ZA27 alloy<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=B8110C62B88392DEE54279CE2D58C335&yid=D43C4A19B2EE3C0A&vid=7801E6FC5AE9020C&iid=94C357A881DFC066&sid=B66C5792F4740920&eid=4B168891B5E5FB30&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=19