%0 Journal Article
%T Effect of Y Addition on Microstructure and Mechanical Properties of Friction Stir Welded ZK60 Alloy<br>
%A GM Xie
%A ZY Ma
%A L Geng
%A <br>
%J 材料科学技术学报
%D 2009
%I 
%X 6 mm thick ZK60 and ZK60-Y alloy plates were successfully friction stir welded (FSW) at a tool rotation rate of 1200 r/min and a traverse speed of 100 mm/min.FSW resulted in the dissolution of MgZn2 particles in the ZK60 and the breakup and dispersion of W-phase (Mg3Zn3Y2) particles in the ZK60-Y alloy, thereby leading to a decrease in the hardness of the nugget zone (NZ) for the ZK60 alloy and an increase in the hardness of the NZ for the ZK60-Y alloy, respectively.While two FSW joints exhibited similar joint efficiency (87%-89% of ultimate tensile strengths of the parent materials), the yield strength of the FSW ZK60-Y joint was substantially higher than that of the FSW ZK60 joint.The fracture occurred in the NZ and the heat affected zone for the ZK60 and ZK60-Y joints, respectively, which were consistent with the lowest hardness distribution of the welded joints.
%K Friction stir welding
%K Magnesium
%K Microstructure
%K Mechanical properties<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=1C879252C3ED663831496BA60AFC87A2&yid=DE12191FBD62783C&vid=C5154311167311FE&iid=38B194292C032A66&sid=381FB4265090A8E0&eid=26AEEED215BE97D0&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=15