{"id":232907,"date":"2022-02-10T06:41:20","date_gmt":"2022-02-09T22:41:20","guid":{"rendered":"\/\/m.iemloyee.com\/?p=232907"},"modified":"2022-02-09T22:48:06","modified_gmt":"2022-02-09T14:48:06","slug":"%e9%a6%99%e6%b8%af%e5%9f%8e%e5%a4%a7%e6%9d%a8%e5%8b%87%e6%95%99%e6%8e%88%e5%9b%a2%e9%98%9fnature-%e8%b6%85%e5%bc%b9%e6%8a%97%e6%9e%81%e6%b8%a9%e9%ab%98%e7%86%b5%e8%89%be%e6%9e%97%e7%93%a6%e5%90%88","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=232907","title":{"rendered":"\u9999\u6e2f\u57ce\u5927\u6768\u52c7\u6559\u6388\u56e2\u961fNature: \u8d85\u5f39\u6297\u6781\u6e29\u9ad8\u71b5\u827e\u6797\u74e6\u5408\u91d1"},"content":{"rendered":"
\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n 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2\u00d710-4<\/sup>\uff09\u3002\u66f4\u6709\u8da3\u7684\u662f\uff0c\u8fd9\u79cd\u9ad8\u71b5\u5408\u91d1\u8868\u73b0\u51fa\u4e0d\u5bfb\u5e38\u7684\u827e\u6797\u74e6\u6548\u5e94\u3002\u5176\u5f39\u6027\u6a21\u91cf\u5728\u5ba4\u6e29\u5230\u7ea61000K\u4ecd\u4fdd\u6301\u4e0d\u53d8\uff0c\u751a\u81f3\u5fae\u5fae\u5347\u9ad8\uff0c\u800c\u6ca1\u6709\u53d1\u751f\u4efb\u4f55\u76f8\u53d8\u3002\u8fd9\u79cd\u884c\u4e3a\u662f\u8fc4\u4eca\u4e3a\u6b62\u62a5\u9053\u7684\u5408\u91d1\u6240\u65e0\u6cd5\u6bd4\u62df\u7684\uff0c\u4e5f\u8bb8\u53ef\u4ee5\u5e94\u7528\u4e8e\u672a\u6765\u4eba\u7c7b\u7684\u592a\u7a7a\u63a2\u6d4b\u4e2d\u3002<\/p>\n \u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n \u8fd1\u65e5\uff0c\u9999\u6e2f\u57ce\u5e02\u5927\u5b66\u6768\u52c7\u6559\u6388\u8bfe\u9898\u7ec4\u4e0e\u5185\u5730\uff0c\u53f0\u6e7e\uff0c\u6cd5\u56fd\u4ee5\u53ca\u7f8e\u56fd\u7684\u8bfe\u9898\u7ec4\u5408\u4f5c\uff0c\u901a\u8fc7\u7194\u70bc-\u94dc\u6a21\u94f8\u9020\u548c\u5b9a\u5411\u51dd\u56fa\u7b49\u65b9\u6cd5\u8bbe\u8ba1\u5e76\u5236\u5907\u4e86\u6210\u5206\u4e3aCo25<\/sub>Ni25<\/sub>(HfTiZr)50<\/sub>\uff08\u539f\u5b50\u6bd4\uff09\u7684\u590d\u6742\u6210\u5206\u5408\u91d1\u3002\u5c3d\u7ba1\u8fd9\u79cd\u5408\u91d1\u7684\u5e73\u5747\u539f\u5b50\u5c3a\u5bf8\u5dee\u8fbe\u5230\u4e8611%\uff0c\u5e94\u5f53\u5f62\u6210\u591a\u76f8\u6216\u975e\u6676\u7ed3\u6784\uff0c\u7136\u800c\u7ed3\u6784\u8868\u5f81\u5b9e\u9a8c\u7ed3\u679c\uff08\u56fe1\uff09\u663e\u793a\u8fd9\u79cd\u5408\u91d1\u4e3a\u5355\u76f8B2\u7ed3\u6784\u3002\u6839\u636eDFT\u6a21\u62df\u7ed3\u679c\uff08\u56fe2\uff09\u4e0eSTEM\u7ed3\u679c\uff08\u56fe1c\uff09\uff0c\u8fd9\u662f\u7531\u4e8e\u539f\u5b50\u5c3a\u5ea6\u7684\u5316\u5b66\u6709\u5e8f\u6027\u5438\u6536\u4e86\u539f\u5b50\u5c3a\u5bf8\u5dee\u5f02\u7684\u5f71\u54cd\u3002\u7531\u4e8e\u6676\u683c\u7578\u53d8\u963b\u788d\u4e86\u4f4d\u9519\u79fb\u52a8\uff0c\u4f7f\u5f97\u8be5\u5408\u91d1\u5728\u4e0d\u53d1\u751f\u76f8\u53d8\u7684\u524d\u63d0\u4e0b\u8868\u73b0\u51fa\u9ad8\u5f3a\u5ea6\uff0c\u8d85\u9ad8\u5f39\u6027\u6781\u9650\uff08~2%\uff09\uff0c\u4e0e\u8d85\u4f4e\u80fd\u91cf\u8017\u6563\uff08\u56fe3\uff09\u3002\u76f8\u6bd4\u4e8e\u5176\u4ed6\u5408\u91d1\u6750\u6599\uff0c\u8be5\u5408\u91d1\u8868\u73b0\u51fa\u72ec\u7279\u7684\u827e\u6797\u74e6\u6548\u5e94\uff1a\u968f\u7740\u6e29\u5ea6\u5347\u9ad8\uff0c\u8be5\u5408\u91d1\u7684\u6768\u6c0f\u6a21\u91cf\u4e0d\u4f46\u6ca1\u6709\u4e0b\u964d\uff0c\u53cd\u800c\u6709\u5fae\u5e45\u63d0\u9ad8\uff08\u56fe4a\uff09\u3002\u6839\u636e\u5206\u5b50\u52a8\u529b\u5b66\u6a21\u62df\u7ed3\u679c\uff08\u56fe4b\uff09\uff0cCo25<\/sub>Ni25<\/sub>(HfTiZr)50<\/sub>\u7684\u827e\u6797\u74e6\u6548\u5e94\u6765\u81ea\u4e8e\u4e00\u79cd\u65b0\u7684\u975e\u76f8\u53d8\u673a\u5236\uff1a\u5373\u70ed\u81a8\u80c0\u548c\u7ed3\u6784\u65e0\u5e8f\u6027\u4e0b\u964d\u6548\u5e94\u7684\u76f8\u4e92\u62b5\u6d88\u3002\u8be5\u6210\u679c\u4ee5\u9898\u4e3a\u201cA highly distorted ultraelastic chemically complex Elinvar alloy<\/strong>\u201d\u53d1\u8868\u5728Nature<\/strong>\u4e0a\u3002\u6587\u7ae0\u5171\u540c\u7b2c\u4e00\u4f5c\u8005\u4e3a\u9999\u6e2f\u57ce\u5927\u8d6b\u5168\u5cf0\u535a\u58eb\uff0c\u738b\u5efa\u56fd\u535a\u58eb\uff08\u539f\u9999\u6e2f\u57ce\u5927\u8bbf\u95ee\u5b66\u8005\uff0c\u73b0\u4e3a\u4e1c\u839e\u7406\u5de5\u6559\u6388\uff09\uff0c\u4ee5\u53ca\u53f0\u6e7e\u4e2d\u7814\u9662\u9648\u4fe1\u5b89\u535a\u58eb\u3002\u5171\u540c\u901a\u8baf\u4f5c\u8005\u4e3a\u53f0\u6e7e\u4e2d\u7814\u9662\u5305\u7eaf\u4f1f\u6559\u6388\uff0c\u9999\u6e2f\u5927\u5b66Srolovitz \u6559\u6388\u4ee5\u53ca\u9999\u6e2f\u57ce\u5927\u6768\u52c7\u6559\u6388\u3002<\/p>\n \u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n \u56fe1. \u5355\u6676Co25<\/sub>Ni25<\/sub>(HfTiZr)50<\/sub>\u5408\u91d1\u7684\u7ed3\u6784\u8868\u5f81<\/p>\n a<\/strong>. \u5355\u76f8Co25<\/sub>Ni25<\/sub>(HfTiZr)50<\/sub>\u5408\u91d1\u7684XRD\u66f2\u7ebf\u548cEBSD\u56fe\u50cf\uff08\u63d2\u56fe\uff09\uff1bb<\/strong>. APT\u91cd\u5efa3D\u5143\u7d20\u5206\u5e03\u56fe\uff1bc<\/strong>. \u7ec4\u6210\u5143\u7d20\u7684\u9891\u7387\u5206\u5e03\u56fe\uff1bd-f<\/strong>. \u4e0d\u540c\u8f74\u5411\uff08[111]\uff0c[011]\uff0c\u548c[001]\uff09\u7684STEM-HADDF\u56fe\u50cf\uff1bg<\/strong>. STEM-EDS\u5728[011]\u7684\u5143\u7d20\u9762\u626b\u56fe\u3002<\/p>\n \u56fe2. Co25<\/sub>Ni25<\/sub>(HfTiZr)50<\/sub>\u4e09\u79cd\u4e0d\u540c\u7ed3\u6784\u6a21\u578b\u7684DFT\u8ba1\u7b97\u7ed3\u679c<\/p>\n a<\/strong>. \u4e09\u79cd\u7ed3\u6784\u6a21\u578b\u7684\u5178\u578b\u539f\u5b50\u6784\u578b\uff1bb<\/strong>. 0K\u65f6\u7684\u6a21\u578b\u52bf\u80fd\u5206\u5e03\uff1bc<\/strong>. \u6a21\u578b3\u7684\u4f53\u79ef\u5e94\u53d8\u548cvon Mises \u5e94\u53d8\u5206\u5e03\uff1bd<\/strong>.\u7578\u53d8\u539f\u5b50\u56e2\u7ec4\u7c07\u3002<\/p>\n \u56fe3. Co25<\/sub>Ni25<\/sub>(HfTiZr)50<\/sub> \u7684\u673a\u68b0\u6027\u80fd\u8868\u5f81<\/p>\n a<\/strong>. \u5ba4\u6e29\u4e0b\u5355\u6676[111]\u5411\u4e0e\u591a\u6676\uff08\u63d2\u56fe\uff09Co25<\/sub>Ni25<\/sub>(HfTiZr)50<\/sub>\u5408\u91d1\u7684\u5355\u8f74\u5fae\u67f1\u538b\u7f29\u5e94\u529b-\u5e94\u53d8\u66f2\u7ebf\uff1bb<\/strong>. Co25<\/sub>Ni25<\/sub>(HfTiZr)50<\/sub> \u4e0e\u5176\u4ed6\u5408\u91d1\u6750\u6599\u7684\u5f3a\u5ea6\u5c3a\u5bf8\u6bd4\u8f83\u56fe\uff1bc<\/strong>. \u5355\u6676\u6837\u54c1\u65bd\u52a0\u673a\u68b0\u8f7d\u8377\u65f6\uff08110\uff09\u548c\uff08001\uff09\u6676\u9762\u7684\u9762\u95f4\u8ddd\u53d8\u5316\u56fe\uff1bd<\/strong>. \u5728[110]\u65b9\u5411\u65bd\u52a0\u538b\u5e94\u529b\u7684\u5e94\u529b-\u5e94\u53d8\u66f2\u7ebf\uff1bf<\/strong>. \uff08110\uff09\u9762\u548c\uff08001\uff09\u9762\u76842D\u7279\u5f81XRD\u56fe\u6848\u3002<\/p>\n \u56fe4. Co25<\/sub>Ni25<\/sub>(HfTiZr)50<\/sub>\u5408\u91d1\u7684\u827e\u6797\u74e6\u6548\u5e94<\/p>\n a<\/strong>. Co25<\/sub>Ni25<\/sub>(HfTiZr)50<\/sub> \u5408\u91d1\u7684\u6768\u6c0f\u6a21\u91cf\u968f\u6e29\u5ea6\u53d8\u5316\u56fe\u53ca\u4e0e\u5176\u4ed6\u91d1\u5c5e\u6750\u6599\u7684\u6bd4\u8f83\uff1bb<\/strong>. \u4e0d\u540c\u6e29\u5ea6\u4e0bvon Mises\u5e94\u53d8\u548c\u4f53\u79ef\u5e94\u53d8\u5206\u5e03\u56fe\uff1bc<\/strong>. 0K-1000K\u5185\u6a21\u62df\u8ba1\u7b97\u7684\u5f39\u6027\u6a21\u91cf\uff1bd<\/strong>. \u4f4e\u6e29\u4e0e\u9ad8\u6e29\u4e0b\u7578\u53d8\u6676\u683c\u793a\u610f\u56fe\u3002<\/p>\n \u3010\u603b\u7ed3\u3011<\/p>\n \u7efc\u4e0a\u6240\u8ff0\uff0c\u672c\u6587\u901a\u8fc7\u5b9e\u9a8c\u548c\u6a21\u62df\u7b49\u624b\u6bb5\u8868\u5f81\u4e86 Co25<\/sub>Ni25<\/sub>(HfTiZr)50<\/sub> \u5408\u91d1\u9ad8\u5ea6\u7684\u6676\u683c\u7578\u53d8\u548c\u590d\u6742\u7684\u539f\u5b50\u5c3a\u5ea6\u5316\u5b66\u6709\u5e8f\u6027\u3002 \u7531\u4e8e\u6676\u683c\u7578\u53d8\u6548\u5e94\uff0c\u8be5\u5408\u91d1\u7684\u4f4d\u9519\u8fd0\u52a8\u53d7\u5230\u9ad8\u80fd\u91cf\u52bf\u5792\u7684\u963b\u788d\u8fdb\u800c\u8868\u73b0\u51fa\u6781\u9ad8\u7684\u5f39\u6027\u6781\u9650\u3001\u975e\u5e38\u4f4e\u7684\u80fd\u91cf\u8017\u6563\u548c\u72ec\u7279\u7684\u827e\u6797\u74e6\u6548\u5e94\u3002\u7531\u4e8e\u8d85\u5f39\u6027\u548c\u6781\u7aef\u6e29\u5ea6\u6761\u4ef6\u4e0b\u7684\u6a21\u91cf\u7a33\u5b9a\u6027\uff0c\u8be5\u5408\u91d1\u53ef\u4ee5\u5e94\u7528\u4e8e\u6781\u7aef\u670d\u5f79\u6e29\u5ea6\u4e0b\u9700\u8981\u6052\u5b9a\u5f39\u6027\u6a21\u91cf\u7684\u9ad8\u7cbe\u5ea6\u8bbe\u5907\u4e2d\uff0c\u5982\u592a\u7a7a\u63a2\u6d4b\u7684\u7cbe\u5bc6\u673a\u68b0\u8ba1\u65f6\u5668\u7b49\u3002<\/p>\n
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