| Effect of trace rare earth element Er on high pure Al |
| |
| 作者姓名： | 杨军军 聂祚仁 金头男 徐国富 付静波 阮海琼 左铁镛 |
| |
| 作者单位： | School of Material Science and Engineering Beijing Polytechnic University，Beijing 100022，China，School of Material Science and Engineering Beijing Polytechnic University，Beijing 100022，China，School of Material Science and Engineering Beijing Polytechnic University，Beijing 100022，China，School of Material Science and Engineering Beijing Polytechnic University，Beijing 100022，China，School of Material Science and Engineering Beijing Polytechnic University，Beijing 100022，China，School of Material Science and Engineering Beijing Polytechnic University，Beijing 100022，China，School of Material Science and Engineering Beijing Polytechnic University，Beijing 100022，China |
| |
| 基金项目： | Project(G19990 64 90 7)supportedbytheNationalPriorityDevelopmentforAlFundamentalResearchofChina |
| |
| 摘 要： | 1 INTRODUCTIONAsit swellknown ,Chinaisrichinrareearths ,whoseprovedreservesare 80 %ofthetotalreservesoftheworld ,rankingfirstintheworld .Atpresent,theresearchandapplicationofREinsteel&ironareratherprofoundinChina .ThoughtheapplicationandstudiesaboutREinaluminumanditsalloysbeganearly ,it snotuntillateinthe 1970 sthattheinvesti gationandexploitationbeganonalargescaleandgraduallycametoaclimax13] .Inthepast ,there searchofREaluminummainlyfocusedontheapplica tionofsomeelementssuchasLa ,…
|
Effect of trace rare earth element Er on high pure Al |
| |
| YANG Jun jun,NIE Zuo ren,JIN Tou nan,XU Guo fu FU Jing bo,RUAN Hai qiong,ZUO Tie yong.Effect of trace rare earth element Er on high pure Al[J].Transactions of Nonferrous Metals Society of China,2003,13(5). |
| |
| Authors: | YANG Jun jun NIE Zuo ren JIN Tou nan XU Guo fu FU Jing bo RUAN Hai qiong ZUO Tie yong |
| |
| Abstract: | The influence of trace Er addition on high pure aluminum was studied by mechanical properties measurement,hardness measurement, optical microscope,transmission electron microscope and energy spectrum analysis. The results show that minor Er in the studied alloy exists in the form of Al3Er,only a few of Er in α-Al based solid solution .Primary Al3Er particles formed during solidification were often found at the center of aluminum grains and acted as heterogeneous nucleus, also increased the rate of nucleation, therefore the grain are remarkably refined. Trace Er addition to high pure aluminum is able to increase the mechanical properties of high pure Al, which is caused by fine grain strengthening, substructure strengthening and precipitation strengthening. The recrystallization temperature of Er-doped aluminum increases above 50 ℃, which is caused by the pinning effect of highly dispersed fine Al3Er precipitates on dislocations and sub-grain boundaries. |
| |
| Keywords: | rare earth element Er mechanical properties recrystallization Al 3Er |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
