{"id":90490,"date":"2017-07-09T14:00:33","date_gmt":"2017-07-09T06:00:33","guid":{"rendered":"\/\/m.iemloyee.com\/?p=90490"},"modified":"2017-07-08T08:46:16","modified_gmt":"2017-07-08T00:46:16","slug":"acta-mater-%ef%bc%9amg-y%e3%80%81mg-al%e5%92%8cmg-zn%e5%90%88%e9%87%91%e4%b8%ad%e5%a0%86%e5%9e%9b%e5%b1%82%e9%94%99%e8%83%bd%e5%92%8c%e5%af%b9%e2%9f%a8ca%e2%9f%a9%e6%b4%bb%e6%80%a7%e7%9a%84%e5%bd%b1","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=90490","title":{"rendered":"Acta Mater.\uff1aMg-Y\u3001Mg-Al\u548cMg-Zn\u5408\u91d1\u4e2d\u5806\u579b\u5c42\u9519\u80fd\u548c\u5bf9\u27e8c+a\u27e9\u6d3b\u6027\u7684\u5f71\u54cd\u7684\u7b2c\u4e00\u6027\u539f\u7406\u8ba1\u7b97"},"content":{"rendered":"

\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n

Mg\u662f\u4e00\u79cd\u8f7b\u8d28\u91d1\u5c5e\uff0c\u5ba4\u6e29\u4e0b\u5176\u5bc6\u5ea6\u4e3a1.738g\/cm3<\/sup>\uff0c\u8fd9\u4ec5\u4e3aFe\u5bc6\u5ea6\u768422\uff05\uff0cAl\u5bc6\u5ea6\u768464\uff05\u3002\u901a\u8fc7\u589e\u52a0Mg\u6216Mg\u5408\u91d1\u5728\u6c7d\u8f66\u548c\u822a\u7a7a\u822a\u5929\u5de5\u4e1a\u4e2d\u7684\u4f7f\u7528\u91cf\u53ef\u4ee5\u5b9e\u73b0\u8fd0\u8f93\u5de5\u5177\u7684\u9ad8\u80fd\u6548\u3002Mg\u5728\u4eba\u4f53\u5185\u7684\u751f\u7269\u76f8\u5bb9\u6027\u4e5f\u4f7f\u5f97\u5176\u5bf9\u751f\u7269\u533b\u5b66\u8bbe\u5907\u53ca\u79fb\u690d\u6750\u6599\u7684\u5e94\u7528\u5177\u6709\u5de8\u5927\u7684\u5438\u5f15\u529b\u3002\u7136\u800c\uff0cMg\u5f88\u8106\u3002\u4e0e\u5176\u5b83\u91d1\u5c5e\u5982Al\u3001Ti\u53ca\u5176\u5408\u91d1\u76f8\u6bd4\uff0c\u5b83\u5177\u6709\u4f4e\u5ef6\u5c55\u6027\u548c\u4f4e\u65ad\u88c2\u97e7\u6027\u3002\u8fd9\u4f7f\u5f97Mg\u96be\u4ee5\u5728\u5ba4\u6e29\u4e0b\u5f62\u6210\uff0c\u5e76\u9650\u5236\u4e86\u5176\u5728\u8010\u635f\u7ed3\u6784\u7ec4\u5206\u4e2d\u7684\u5e94\u7528\u3002\u9274\u4e8e\u5176\u5de8\u5927\u7684\u6f5c\u529b\u548c\u5f53\u524d\u7684\u6311\u6218\uff0c\u76ee\u524d\u4e16\u754c\u4e0a\u6b63\u79ef\u6781\u5f00\u5c55\u5bf9\u5ef6\u6027Mg\u5408\u91d1\u7684\u7814\u7a76\u3002<\/p>\n

\u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n

\u8fd1\u65e5\uff0c\u6d1b\u6851\u8054\u90a6\u7406\u5de5\u5b66\u9662\u7684<\/strong>Zhaoxuan Wu<\/strong>\uff08\u901a\u8baf\u4f5c\u8005\uff09<\/strong>\u5728Acta Mater.<\/strong>\u4e0a\u53d1\u8868\u4e86\u9898\u4e3a\u201cFirst-principles calculations of stacking fault energies in Mg-Y, Mg-Al and Mg-Zn alloys and implications for <\/strong>\u27e8<\/strong>c + a<\/strong>\u27e9<\/strong> activity<\/strong>\u201d\u7684\u6587\u7ae0\u3002\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u4f5c\u8005\u4f7f\u7528\u7cbe\u786e\u7684\u7b2c\u4e00\u539f\u7406\u65b9\u6cd5\u548c\u8ba1\u7b97\u6765\u8bc4\u4f30\u4e0e\u5f53\u524d\u5b9e\u9a8c\u76f8\u5173\u7684\u7a00\u91ca\u6781\u9650\u4e2d\u6240\u6709\u76f8\u5173\u7684SF\u80fd\u91cf\u4f5c\u4e3aY\u3001Al\u548cZn\u6d53\u5ea6\u7684\u51fd\u6570\u3002\u7ed3\u679c\u8868\u660e\uff0c\u4e0d\u540c\u6eb6\u8d28\u4e4b\u95f4\u4ee5\u53ca\u76f8\u540c\u6eb6\u8d28\u7684\u4e0d\u540cSF\u4e4b\u95f4\u7684\u6eb6\u8d28\u6548\u5e94\u4e0d\u540c\u3002\u4e0e\u76ee\u524d\u5e7f\u6cdb\u63a5\u53d7\u7684\u5047\u8bbe\u76f8\u53cd\uff0cMg-3wt.%RE\u5408\u91d1\u4e2d\u589e\u5f3a\u27e8c+a\u27e9\u6d3b\u6027\u4f3c\u4e4e\u5e76\u4e0d\u4e0e\u8fd9\u4e9bSF\u80fd\u91cf\u76f4\u63a5\u76f8\u5173\u3002Y\u5f15\u8d77\u7684Pyr. II\u3001I SF\u80fd\u91cf\u7684\u51cf\u5c11\u91cf\u5bf9\u6613\u6ed1\u52a8\u7684Pyr. II\u3001I\u4f4d\u9519\u8f6c\u53d8\u4e3a\u65e0\u67c4\u57fa\u5e95\u5e73\u9762\u89e3\u79bb\u7ed3\u6784\u7684\u70ed\u529b\u5b66\u9a71\u52a8\u529b\u4ea7\u751f\u7684\u5f71\u54cd\u4e5f\u5f88\u5c0f\u3002\u76f8\u5bf9\u4e8eAl\u548cZn\uff0c\u6eb6\u8d28Y\u53ea\u80fd\u7a81\u51fa\u5730\u5f71\u54cd\u91d1\u5b57\u5854\u5f62SF\u80fd\u91cf\u3002\u8fd9\u4e9b\u7ed3\u679c\u8868\u660e\u4e86\u7cbe\u786e\u7684\u7b2c\u4e00\u539f\u7406\u8ba1\u7b97\u5728\u9002\u5f53\u6eb6\u8d28\u6d53\u5ea6\u4e0b\u5bf9\u56fa\u6eb6\u5408\u91d1\u5316\u7814\u7a76\u7684\u91cd\u8981\u6027\uff0c\u8fd9\u4f7f\u5f97\u5b9a\u91cf\u8bc4\u4f30\u4e0e\u5ef6\u5c55\u6027\u76f8\u5173\u7684\u6f5c\u5728\u4f4d\u9519\u73b0\u8c61\u6210\u4e3a\u53ef\u80fd\u3002<\/p>\n

\u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n

\u56fe\u4e00\uff1a<\/strong>Mg<\/strong>\u6676\u683c\u4e2d\u7684\u57fa\u9762\u3001<\/strong>Pyr. I\u9762\u3001Pyr. II\u9762\uff0c\u53ca\u5404\u9762\u7684SF<\/p>\n

\"\"<\/p>\n

(a)\u5757\u72b6Mg\u5177\u6709\u6bd4fcc\u548cbcc\u91d1\u5c5e\u7684\u5bf9\u79f0\u6027\u8fd8\u4f4e\u7684hcp\u7ed3\u6784\uff0c\u4ee5\u53caPyr. II\u3001Pyr. I\u9762\u3002<\/p>\n

(b-d)\u56fe(b-d)\u5206\u522b\u5c55\u793a\u57fa\u9762\u3001Pyr. I\u3001Pyr. II\u7684SF\u3002<\/p>\n

\u56fe\u4e8c\uff1a\u7528\u4e8e<\/strong>SF<\/strong>\u80fd\u91cf\u8ba1\u7b97\u7684\u8d85\u7ea7\u6676\u80de\u7684\u539f\u7406\u56fe<\/strong><\/p>\n

\"\"<\/p>\n

(a)\u5bf9\u4e8e\u57fa\u9762I1<\/sub>\u5c42\u9519\u6240\u4f7f\u7528\u7684\u5468\u671f\u6027\u53cc\u5c42\u9519\u8d85\u7ea7\u6676\u80de\u51e0\u4f55\u7ed3\u6784\u3002<\/p>\n

(b)\u5bf9\u4e8e\u53ef\u7531\u5355\u4e00\u6ed1\u52a8\u9020\u6210\u7684\u5176\u4ed6SF\u6240\u4f7f\u7528\u7684\u503e\u659c\u6676\u80de\u51e0\u4f55\u7ed3\u6784\u3002<\/p>\n

\u56fe\u4e09\uff1a\u6eb6\u8d28<\/strong>-SF<\/strong>\u76f8\u4e92\u4f5c\u7528\u80fd<\/strong>Eint<\/sub><\/strong>(<\/strong>d1<\/sub>)<\/strong>\u5173\u4e8e<\/strong>\u9762\u5185\u8d85\u6676\u80de\u5c3a\u5bf8\u53ca\u9762\u5185\u6d53\u5ea6<\/strong>cp<\/sub><\/strong>\u7684\u51fd\u6570<\/strong><\/p>\n

\"\"<\/p>\n

(a-d)\u5bf9\u4e8e\u57fa\u9762I1<\/sub>(a)\u3001I2<\/sub>(b)\u3001Pyr. I-W(c)\u3001Pyr. II(d)\u6eb6\u8d28-SF\u76f8\u4e92\u4f5c\u7528\u80fdEint<\/sub>(d1<\/sub>)\u5173\u4e8e\u9762\u5185\u8d85\u6676\u80de\u5c3a\u5bf8\u53ca\u9762\u5185\u6d53\u5ea6cp<\/sub>\u7684\u51fd\u6570\u3002<\/p>\n

\u56fe<\/strong>\u56db\uff1a<\/strong>\u6eb6\u8d28<\/strong>-SF<\/strong>\u76f8\u4e92\u4f5c\u7528\u80fd\u5173\u4e8e\u8ddd\u79bb\u7684\u51fd\u6570<\/strong><\/p>\n

\"\"<\/p>\n

(a-c)\u5bf9\u4e8e(a) basal I1\u3001(b) basal I2\u3001(c) Pyr. I-W SF2\uff0c\u6eb6\u8d28-SF\u76f8\u4e92\u4f5c\u7528\u80fd\u5173\u4e8e\u8ddd\u79bb\u7684\u51fd\u6570\u3002<\/p>\n

\u56fe\u4e94<\/strong>\uff1a\u5f62\u6210\u548c\u8fc1\u79fb\u8be5<\/strong>SF<\/strong>\u6240\u9700\u7684\u539f\u5b50\u4f4d\u79fb<\/strong><\/p>\n

\"\"<\/p>\n

(a)\u539f\u5b50\u6ed1\u79fb\u548c\u6539\u7ec4\uff0c\u7528\u4e8e\u5728hcp\u7ed3\u6784\u7684\u6ed1\u79fb\u5e73\u9762\u4e0a\u521b\u5efaSF\u3002<\/p>\n

(b)\u5c06SF\u4ece(a)\u8fc1\u79fb\u5230\u865a\u7ebf\u6240\u793a\u7684\u65b0\u7684\u201c\u6ed1\u79fb\u201d\u5e73\u9762\u7684\u6539\u7ec4\u8fd0\u52a8\u3002<\/p>\n

(c)SF\u5f62\u6210\u548c\u8fc1\u79fb\u8fc7\u7a0b\u4e2d\u7eff\u5c42\u4e0a\u7684\u539f\u5b50\u603b\u4f4d\u79fb\u3002<\/p>\n

\u56fe\u516d<\/strong>\uff1a\u8ba1\u7b97<\/strong>Pyr. II SF1<\/strong>\u7684<\/strong>\u6eb6\u8d28<\/strong>-SF<\/strong>\u76f8\u4e92\u4f5c\u7528\u80fd\u7684\u4e09\u79cd\u65b9\u5f0f<\/strong><\/p>\n

\"\"<\/p>\n

(a)\u6eb6\u8d28\u653e\u7f6e\u5728\u5806\u579b\u5c42\u9519\u4e24\u4fa7\u76f8\u7b49\u5e73\u9762\u4e0a\u76842\u6eb6\u8d28\u65b9\u6cd5\u3002<\/p>\n

(b)\u7ea6\u675f1\u65b9\u6cd5\uff0c\u5176\u4e2d\u5728\u5806\u579b\u5c42\u9519\u8bef\u5e73\u9762\u5904\u7684\u6eb6\u8d28\u4e0b\u65b9\u7684\u539f\u5b50\u88ab\u9650\u5236\u4e3ax1<\/sub>\u4f4d\u79fb\uff0c\u901a\u8fc7\u51cf\u53bb\u4f30\u8ba1\u7684\u7ea6\u675f\u80fd\u91cf\u6765\u6821\u6b63\u3002<\/p>\n

(c)\u7ea6\u675f2\u65b9\u6cd5\uff0c\u5176\u4e2d\u5728\u6eb6\u8d28\u4e0b\u9762\u7684\u5e73\u9762d-1<\/sub>\u3001d-3<\/sub>\u548cd-2<\/sub>\u3001d-4<\/sub>\u4e2d\u7684\u6bcf\u5bf9Mg\u539f\u5b50\u7684x1<\/sub>\u4f4d\u79fb\u88ab\u9650\u5236\u5728x1<\/sub>\u65b9\u5411\u4e0a\u4e00\u8d77\u79fb\u52a8\u3002<\/p>\n

(d)\u7531\u865a\u7ebf\u6846\u6307\u793a\u7684\u4e00\u4e2a\u57fa\u9762\u65cb\u8f6c\u5e76\u793a\u51fa\u53e6\u4e00\u4e2a\u65b9\u5411\u3002<\/p>\n

\u3010\u5c0f\u7ed3\u3011<\/strong><\/p>\n

\u672c\u6587\u4f5c\u8005\u63d0\u51fa\u4e86\u8ba1\u7b97\u6eb6\u8d28-SF\u76f8\u4e92\u4f5c\u7528\u80fd\u7684\u8be6\u7ec6\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u4e86Y\u3001Al\u548cZn\u6eb6\u8d28\u5bf9Mg\u4e2d\u6240\u6709\u76f8\u5173SF\u80fd\u91cf\u7684\u5f71\u54cd\u7684\u5b9a\u91cf\u8bc4\u4f30\u3002\u7814\u7a76\u7ed3\u679c\u8868\u660e\uff0c\u5404\u79cd\u6eb6\u8d28\u5728\u5404\u79cd\u57fa\u9762\u548c\u91d1\u5b57\u5854\u5f0fSF\u4e4b\u95f4\u4f1a\u4ea7\u751f\u975e\u5e38\u4e0d\u540c\u7684\u6548\u679c\uff0c\u8fd9\u53ef\u4ee5\u4ea7\u751f\u9ad8\u27e8c+a\u27e9\u6d3b\u6027\u548c\u5ef6\u6027Mg\uff0c\u5e76\u89c2\u5bdf\u5230Al\u548cZn\u6ca1\u6709\u4ea7\u751f\u76f8\u540c\u6c34\u5e73\u7684\u27e8c+a\u27e9\u6d3b\u6027\u6216\u9ad8\u5ef6\u5c55\u6027\u3002Y\u548c\u5176\u4ed6RE\u6eb6\u8d28\u7684\u5f71\u54cd\u4e0e\u57fa\u9762SF\u65e0\u76f4\u63a5\u5173\u7cfb\uff0c\u56e0\u6b64\u57fa\u9762I1<\/sub> SF\u80fd\u91cf\u4e0d\u53ef\u80fd\u662f\u5b9e\u73b0\u97e7\u6027Mg\u7684\u5173\u952e\u8bbe\u8ba1\u53c2\u6570\u3002\u6b64\u5916\uff0c\u6eb6\u8d28\u4f3c\u4e4e\u4e0d\u4f1a\u663e\u7740\u6539\u53d8Pyr\u7684\u6709\u5bb3\u8f6c\u5316\u3002\u4f46\u7ed3\u679c\u8868\u660e\uff0c\u589e\u5f3a\u7684\u5ef6\u5c55\u6027\u4e0e\u6eb6\u8d28\u5bf9\u4e24\u4e2a\u9525\u4f53\u5e73\u9762\u7684SF\u548c\u4f4d\u9519\u7684\u4e0d\u540c\u5f71\u54cd\u6709\u5173\u3002\u603b\u4f53\u800c\u8a00\uff0c\u5bf9Mg\u5927\u90e8\u5206\u5c42\u9519\u7684\u6eb6\u8d28\/ SF\u80fd\u91cf\u7684\u7814\u7a76\u7ed3\u679c\u63d0\u4f9b\u4e86\u4e00\u4e2a\u6570\u636e\u5e93\uff0c\u53ef\u7528\u4e8e\u8bc4\u4f30\u9020\u6210Mg\u5408\u91d1\u5ef6\u5c55\u6027\u7684\u673a\u7406\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a<\/strong>First-principles calculations of stacking fault energies in Mg-Y, Mg-Al and Mg-Zn alloys and implications for \u27e8c + a\u27e9 activity<\/a>\uff08Acta Mater.2017\uff0cDOI: 10.1016\/j.actamat.2017.06.062\uff09<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u7f16\u8f91\u90e8\u8ba1\u7b97\u6750\u6599\u7ec4daoke\u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u6574\u7406\u7f16\u8f91\u3002<\/p>\n

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