{"id":28502,"date":"2016-07-25T08:00:31","date_gmt":"2016-07-25T00:00:31","guid":{"rendered":"\/\/m.iemloyee.com\/?p=28502"},"modified":"2016-07-24T21:08:11","modified_gmt":"2016-07-24T13:08:11","slug":"science%e6%9c%80%e6%96%b0%e9%87%8d%e7%a3%85%ef%bc%9a%e8%bd%bb%e9%87%8f%e7%ba%a7%e5%bd%a2%e7%8a%b6%e8%ae%b0%e5%bf%86%e9%95%81%e5%90%88%e9%87%91","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=28502","title":{"rendered":"Science\u6700\u65b0\u91cd\u78c5\uff1a\u8f7b\u91cf\u7ea7\u5f62\u72b6\u8bb0\u5fc6\u9541\u5408\u91d1"},"content":{"rendered":"

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\u56fe\u6587\u5bfc\u8bfb\uff1a<\/strong><\/p>\n

\u56fe\u4e00\uff1a\u5ba4\u6e29\u4e0bMg\u201320.5at% Sc\u8bd5\u6837\u7684XRD\u884d\u5c04\u56fe\u6837\u3002<\/strong><\/p>\n

\"1\"<\/p>\n

\uff08A\uff09\u5206\u522b\u4e3a\u8bd5\u6837\u5728690\u2103\u4e0b\u70ed\u5904\u74060.5h\uff08\u9ed1\u8272\uff09\uff0c\u8bd5\u6837\u70ed\u5904\u7406\u540e\u8fdb\u884c\u51b7\u8f67\uff08\u7ea2\u8272\uff09\uff0c\u4ee5\u53ca\u8bd5\u6837\u5728150\u2103\u4e0b\u62c9\u4f38\u65ad\u88c2\uff08\u84dd\u8272\uff09\u7b49\u5904\u7406\u540e\u5728\u5ba4\u6e29\u4e0b\u7684XRD\u884d\u5c04\u56fe\u6837\u3002X\u5c04\u7ebf\u5f3a\u5ea6\u7528\u5bf9\u6570\u663e\u793a\u3002\u03b1\u9636\u6bb5\u548c\u03b2\u9636\u6bb5\u5206\u522b\u4e3ahcp\u548cbcc\u7ed3\u6784\u3002\u201cM\u201d\u6807\u8bb0\u7684\u5cf0\u503c\u8868\u793a\u538b\u529b\u8bf1\u5bfc\u9636\u6bb5\u3002<\/p>\n

\uff08B\uff09\u03b2\u9636\u6bb5\u7684\u7c89\u672bXRD\u884d\u5c04\u56fe\u6837\u3002<\/p>\n

\uff08C\uff09\u03b1\u9636\u6bb5\u7684\u7c89\u672bXRD\u884d\u5c04\u56fe\u6837\u3002<\/p>\n

\u8fd9\u4e9b\u884d\u5c04\u56fe\u6837\u662f\u5728\u5404\u76f8\u6676\u683c\u53c2\u6570\u57fa\u7840\u4e0a\u6d4b\u5b9a\u7684\u3002<\/p>\n

\u56fe\u4e8c\uff1a Mg\u201320.5at% Sc\u8bd5\u6837\u5728690\u2103\u70ed\u5904\u74060.5h\uff0c\u5faa\u73af\u62c9\u4f38\u5e94\u529b-\u5e94\u53d8\u66f2\u7ebf\u3002<\/strong><\/p>\n

\"2-50\"<\/p>\n

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\uff08E\uff09\u5728\u2013150\u00b0C\uff0cd\/t = 0.66\u4e0b\u8bd5\u6837\u7684\u5e94\u529b-\u5e94\u53d8\u66f2\u7ebf\u3002\u62c9\u4f38\u65b9\u5411\u5e73\u884c\u4e8e\u8f67\u5236\u65b9\u5411\uff0c\u62c9\u4f38\u5e94\u53d8\u4e3a8%\uff0c\u5404\u9636\u6bb5\u5206\u522b\u4e3a\u7070\u7ebf\uff0c\u7d2b\u7ebf\uff0c\u84dd\u7ebf\uff0c\u6d45\u84dd\u7ebf\uff0c\u7eff\u7ebf\uff0c\u9ec4\u7ebf\uff0c\u6a59\u7ebf\u548c\u7ea2\u7ebf\u3002<\/p>\n

\uff08F\uff09\u8d85\u5f39\u6027\u5e94\u53d8\u025bSE<\/sub>\u6ee1\u8db3\u025bt<\/sub>\u2013\u025be<\/sub>\u51fd\u6570\u5173\u7cfb\u3002\u6700\u5927\u5f39\u6027\u5e94\u53d8\u4e3a4.4%\u3002<\/p>\n

\u56fe\u4e09\uff1aMg-20.5at% Sc\u8bd5\u6837\u5728690\u00b0C\u70ed\u5904\u74060.5h\uff0c\u5c48\u670d\u5e94\u529b\u548c\u8d85\u5f39\u6027\u5e94\u53d8\u5bf9\u6e29\u5ea6\u7684\u53d8\u5316\u66f2\u7ebf\u3002<\/strong><\/p>\n

\"3\"<\/p>\n

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\uff08B\uff09\u8d85\u5f39\u6027\u5e94\u53d8\uff08\u03b5j=3<\/sup>SE<\/sub>\uff09\u4f5c\u4e3a\u6e29\u5ea6\u7684\u51fd\u6570\u3002\u03c3y<\/sub>\u548c<\/sub>\u03b5j=3<\/sup>SE<\/sub>\u7684\u5b9a\u4e49\u5728\u56feS4\u4e2d\u7ed9\u51fa\u3002\u9ec4\u8272\u548c\u9ed1\u8272\u7684\u5706\u5708\u5206\u522b\u6307\u793a\u8bd5\u6837\u62c9\u4f38\u65b9\u5411\u6cbf\u8f67\u5236\u65b9\u5411\uff08RD\uff09\u548c\u6a2a\u5411\uff08TD\uff09\u3002\uff08A\uff09\u4e2d\u7ea2\u8272\u548c\u84dd\u8272\u865a\u7ebf\u5206\u522b\u8868\u793a\u6ed1\u79fb\u4e34\u754c\u5e94\u529b\u548c\u8bf1\u5bfc\u9a6c\u6c0f\u4f53\u76f8\u53d8\u7684\u4e34\u754c\u5e94\u529b\u3002\u7ea2\u8272\u9634\u5f71\u533a\u57df\u8868\u793a\u5851\u6027\u53d8\u5f62\u533a\uff0c\u84dd\u8272\u533a\u57df\u8868\u793a\u8d85\u5f39\u6027\u533a\u3002\u9ed1\u8272\u70b9\u5212\u7ebf\u8868\u793a\u8d85\u5f39\u6027\u4e34\u754c\u6e29\u5ea6\u3002<\/p>\n

\u56fe\u56db\uff1a\u591a\u6676SMA\u6750\u6599\u5177\u4f53\u7684\u8d28\u91cf\u4e0e\u6700\u5927\u8d85\u5f39\u6027\u5e94\u53d8\u4e4b\u95f4\u7684\u5173\u7cfb\u3002<\/strong><\/p>\n

\"4\"<\/p>\n

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\u3010\u7ed3\u8bba\u3011<\/strong><\/p>\n

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\u6587\u732e\u94fe\u63a5\uff1aA lightweight shape-memory magnesium alloy<\/a>\uff08Science\uff0c2016\uff0cDOI: 10.1126\/science.aaf6524\uff09<\/p>\n

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