%0 Journal Article %T INFLUENCE OF ASSOCIATED AND SEPARATE PRECIPITATION OF γ″ AND γ′ ON STRUCTURE STABILITY IN INCONEL718 AND MODIFIED ALLOYS %A DONG jianxin XIE Xishan ZHANG Shouhua University of Science and Technology Beijing %A Beijing %A China doctorate student %J 金属学报(英文版) %D 1993 %I %X The precipitation behavior in Inconel 718 and modified alloys has been studied by means ofTEM.The structure of associated precipitation and compact morphology of γ″+γ′ were ob-tained by modifying the contents of Al,Ti and Nb.Experimental results show that the com-pact morphology of γ″+γ′ has the best structure stability at higher temperatures.Instead ofthe transformation γ″→δ in alloy 718 the dissolution of strengthening phases in modified alloyleads material degradation. %U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=B7C5E91FC517620A62D48D9C3AE02D24&yid=D418FDC97F7C2EBA&vid=B31275AF3241DB2D&iid=B31275AF3241DB2D&sid=FED44C0135DC1D9C&eid=3081401A9FAB9CE2&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=0&reference_num=3