%0 Journal Article %T Growth Behavior of α Phase in Ti-5.6Al-4.8Sn-2.0Zr-1.0Mo-0.35Si-0.7Nd Titanium Alloy %A Shangzhou %A ZHANG %A Yuan %A GAO %A Guodong %A WANG %A Yuyin %A LIU %A Rui %A YANG %J 材料科学技术学报 %D 2006 %I %X The thermal stability of the microstructure of a near-α titanium alloy after aging at 750℃ was investigated using optical microscope and transmission electron microscope as well as composition analysis. Aging treatment brings about significant coarsening of grain boundary α and α platelets within the colonies for martensitic microstructure. The observed changes are related to the growth steps or ledges of the interface and lamellar termination presented in the microstructure. The composition analysis of the coarsened α plate is consistent with the growth kinetics. The α Widmanstaetten plates were coarsened due to the movement of α /β interface for Widmanstaetten microstructure, and the phase boundaries of primary α(αp) phase directly moved into the transformed β for bimodal microstructure. %K 钛合金 %K 微观结构 %K 晶粒生长 %K 老化 %U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=66566BFEF8F1471EB9D342AFAC4B4B3B&yid=37904DC365DD7266&vid=BC12EA701C895178&iid=E158A972A605785F&sid=3389C664025A98F9&eid=1A033C02510EFBE6&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=0