%0 Journal Article
%T TWO DIFFERENT KINDS OF INTERNAL FRICTION PEAK IN Al-Sn POLYCRYSTALS<br>Al-Sn 合金中两个不同类型的内耗峰
%A WU Xiaoping
%A ZHANG LideLI Wenkun
%A <br>吴晓平
%A 张立德
%A 李雯坤
%J 材料研究学报
%D 1992
%I 
%X Two different kinds of internal friction peak located at the high-temperatureside of grain boundary peak(GBP)(denoted as P_1 and P_2 were observed in Al-Sn polycrystals.They are related to the grain boundaries because of their disappearence in Al-Sn singlecrystalline specimens.The peak P_1 occurred in Al-0.008wt-%Sn and Al-0.0135wt-%Snpolycrystals is a process peak.The P_1 which has a decline-growth relation with GBP,occursonly in measurements with descending temperature,and is sensitive to aging and annealing.Theother P_2 in Al-0.067wt-%Sn and Al-O.136wt-%Sn,however,is a stable peak.The P_2 hassomething to do with the size of grains and specimens.The results in this paper show that theP_1 is contributed to those fine grain boundaries non-equilibrium segregated with lots of tin at-oms,and the P_2 is contributed by those coarse grain boundaries containing Al-Sn particles.
%K internal friction peak
%K grain boundary segregation
%K fine grain boundaries
%K coarse grain boundaries<br>内耗峰
%K 晶界偏聚
%K 细晶晶界
%K 粗晶晶界
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=C101C4C04993B4D94FCD8446E6CBEB3B&aid=40132970317A2979&yid=F53A2717BDB04D52&vid=B31275AF3241DB2D&iid=B31275AF3241DB2D&sid=B7B25E832E7F23D8&eid=25467A5A28500A25&journal_id=1005-3093&journal_name=材料研究学报&referenced_num=0&reference_num=1