{"id":272071,"date":"2026-06-01T09:09:00","date_gmt":"2026-06-01T01:09:00","guid":{"rendered":"http:\/\/www.cailiaoniu.com\/?p=272071"},"modified":"2026-05-31T21:13:37","modified_gmt":"2026-05-31T13:13:37","slug":"%e4%b8%ad%e5%8d%97%e5%a4%a7%e5%ad%a6%e3%80%8ascripta-materialia%e3%80%8b%ef%bc%9ata%e5%9b%ba%e6%ba%b6%e8%bf%9b%e5%85%a5laves-cr2nb%e7%9b%b8%e4%bb%a5%e6%8f%90%e9%ab%98%e9%93%9c%e5%90%88%e9%87%91","status":"publish","type":"post","link":"http:\/\/www.cailiaoniu.com\/?p=272071","title":{"rendered":"\u4e2d\u5357\u5927\u5b66\u300aScripta Materialia\u300b\uff1aTa\u56fa\u6eb6\u8fdb\u5165Laves\u00a0Cr2Nb\u76f8\u4ee5\u63d0\u9ad8\u94dc\u5408\u91d1\u7684\u6297\u9ad8\u6e29\u8f6f\u5316\u6027\u80fd"},"content":{"rendered":"\n

\u94dc\u5408\u91d1\u4ee5\u5176\u6781\u4f73\u7684\u5bfc\u7535\u3001\u5bfc\u70ed\u6027\u80fd\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u822a\u7a7a\u822a\u5929\uff08\u5982\u706b\u7bad\u53d1\u52a8\u673a\u63a8\u529b\u5ba4\u886c\u91cc\uff09\u3001\u7535\u5b50\u4fe1\u606f\u3001\u4f4e\u7a7a\u7ecf\u6d4e\u53ca\u9ad8\u7aef\u5236\u9020\u7b49\u9886\u57df\u3002\u589e\u6750\u5236\u9020\uff083D\u6253\u5370\uff09\u6280\u672f\u7a81\u7834\u4e86\u4f20\u7edf\u52a0\u5de5\u5de5\u827a\u5bf9\u590d\u6742\u7ed3\u6784\u7684\u7ea6\u675f\uff0c\u4e3a\u822a\u7a7a\u822a\u5929\u7b49\u9886\u57df\u590d\u6742\u9ad8\u6027\u80fd\u94dc\u5408\u91d1\u6784\u4ef6\uff08\u5982\u5e26\u6709\u9ad8\u5bc6\u5ea6\u4e00\u4f53\u5316\u51b7\u5374\u6d41\u9053\u7684\u63a8\u529b\u5ba4\uff09\u7684\u5b9a\u5236\u5316\u751f\u4ea7\u63d0\u4f9b\u4e86\u524d\u6240\u672a\u6709\u7684\u673a\u9047\u3002<\/p>\n\n\n\n

\u7136\u800c\uff0cCu-Cr-Zr\u8fd9\u7c7b\u9ad8\u5f3a\u9ad8\u5bfc\u70ed\u94dc\u5408\u91d1\u5728\u589e\u6750\u5236\u9020\uff08LPBF\uff09\u8fc7\u7a0b\u4e2d\uff0c\u867d\u7136\u80fd\u5b9e\u73b0\u8f83\u597d\u7684\u6210\u5f62\u5bc6\u5ea6\uff0c\u4f46\u5176\u9ad8\u6e29\u6027\u80fd\u5728\u8d85\u8fc7500 \u00b0C\u540e\u4f1a\u53d1\u751f<\/strong>\u6025\u5267\u8870\u51cf<\/strong>\u3002\u8fd9\u4e3b\u8981\u662f\u56e0\u4e3a\u4f20\u7edf\u7684\u6790\u51fa\u76f8\uff08\u5982Cr\u7c92\u5b50\u6216 Cu4<\/sub>Zr\uff09\u5728\u9ad8\u6e29\u4e0b\u6781\u6613\u53d1\u751fOstwald\u719f\u5316\uff0c\u5931\u53bb\u5bf9\u6676\u754c\u548c\u4f4d\u9519\u7684\u9489\u624e\u4f5c\u7528\uff0c\u5bfc\u81f4\u6750\u6599\u53d1\u751f\u518d\u7ed3\u6676\u8f6f\u5316\u3002\u4e3a\u4e86\u63d0\u5347\u9ad8\u6e29\u7a33\u5b9a\u6027\uff0c\u7814\u7a76\u8005\u4eec\u5f00\u53d1\u4e86\u542b\u6709Cr2<\/sub>Nb Laves\u76f8\u7684Cu-Cr-Nb\u5408\u91d1\u3002\u867d\u7136Cr2<\/sub>Nb\u5177\u6709\u6781\u9ad8\u7684\u70ed\u7a33\u5b9a\u6027\uff0c\u4f46\u5728\u6781\u7aef\u9ad8\u6e29\uff08> 700\u00b0C\uff09\u957f\u671f\u670d\u5f79\u65f6\uff0c\u6790\u51fa\u76f8\u4f9d\u7136\u4e0d\u53ef\u907f\u514d\u5730\u4f1a\u53d1\u751f\u4e00\u5b9a\u7a0b\u5ea6\u7684\u7c97\u5316\uff0c\u4ece\u800c\u9650\u5236\u4e86\u94dc\u5408\u91d1\u5728\u66f4\u4e25\u82db\u822a\u7a7a\u822a\u5929\u73af\u5883\u4e2d\u7684\u5e94\u7528\u3002\u5982\u4f55\u5728\u4fdd\u6301\u9ad8\u5bfc\u70ed\u7684\u524d\u63d0\u4e0b\uff0c\u8fdb\u4e00\u6b65\u6784\u7b51\u7eb3\u7c73\u7ea7<\/strong>\u7a33\u6001<\/strong>\u6790\u51fa\u76f8\u3001<\/strong>\u51cf\u7f13<\/strong>\u9ad8\u6e29\u8f6f\u5316\uff0c\u662f\u589e\u6750\u5236\u9020\u8010\u70ed\u94dc\u5408\u91d1\u9886\u57df\u4e9f\u5f85\u89e3\u51b3\u7684\u74f6\u9888\u95ee<\/strong>\u9898\u3002<\/strong><\/p>\n\n\n\n

\u9488\u5bf9\u8fd9\u4e00\u96be\u9898\uff0c\u4e2d\u5357\u5927\u5b66\u7c89\u672b\u51b6\u91d1<\/strong>\u5168\u56fd<\/strong>\u91cd\u70b9\u5b9e\u9a8c\u5ba4<\/strong>\u5468\u79d1\u671d\u6559\u6388\u56e2\u961f\u7684\u5218\u6e10\u9675\u52a9\u7406\u7814\u7a76\u5458\u3001<\/strong>\u9648\u8d85\u6559\u6388<\/strong>\uff0c<\/strong>\u4e0e\u4e2d\u56fd\u6563\u88c2\u4e2d\u5b50\u6e90\u7684\u5fae\u5c0f\u89d2\u4e2d\u5b50\u6563\u5c04\uff08VSANS\uff09\u8c31\u4eea\u7b49\u5355\u4f4d\u5408\u4f5c\uff0c\u5728\u56fd\u9645\u6750\u6599\u5b66\u9876\u5c16\u671f\u520a\u300aScripta Materialia<\/strong>\u300b\u4e0a\u53d1\u8868\u4e86\u9898\u4e3a\u201cRemarkable high-temperature softening resistance of a Cu-Cr-Nb alloy by solubilizing Ta in the Cr<\/em>2<\/sub><\/em><\/sub><\/em>Nb Laves phase<\/em>\u201d\u7684\u7814\u7a76\u6210\u679c\uff0c\u8bba\u6587\u7b2c\u4e00\u4f5c\u8005\u4e3a\u8212\u5fe0\u826f\u535a\u58eb\u7814\u7a76\u751f\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u7814\u7a76\u56e2\u961f\u521b\u65b0\u6027\u5730\u5f15\u5165\u4e86\u5728\u94dc\u57fa\u4f53\u4e2d\u6269\u6563\u901f\u7387\u6781\u4f4e\u3001\u4e14\u70ed\u529b\u5b66\u6027\u8d28\u6781\u5176\u7a33\u5b9a<\/strong>\u7684\u5fae\u91cf\u91cd\u91d1\u5c5e\u5143\u7d20\u2014\u2014\u94bd\uff08Ta\uff09<\/strong>\u3002\u901a\u8fc7LPBF\u6210\u5f62\u5e76\u8f85\u4ee5\u76f4\u63a5\u65f6\u6548\u5904\u7406\uff08600 \u00b0C\/1 h\uff09\uff0c\u6210\u529f\u8bf1\u5bfcTa\u539f\u5b50\u56fa\u6eb6\u8fdbCr2<\/sub>Nb\u7684Laves\u76f8\u6676\u683c\u4e2d\uff0c\u539f\u4f4d\u5f62\u6210\u4e86\u70ed\u529b\u5b66\u7a33\u5b9a\u7684Cr<\/strong>2<\/sub><\/strong><\/sub><\/strong>(Ta, Nb)\u7eb3\u7c73<\/strong>\u7c92\u5b50<\/strong>\u3002\u7b2c\u4e00\u6027\u539f\u7406\u8ba1\u7b97\u8868\u660e\uff0cTa\u7684\u5f15\u5165\u4fc3\u8fdb\u4e86Laves\u76f8\u4ece\u4e9a\u7a33C14\u7ed3\u6784\u5411\u66f4\u7a33\u5b9a\u7684C15\u7ed3\u6784\u8f6c\u53d8\uff0c\u5f62\u6210\u7113\u663e\u8457\u964d\u4f4e\u3002\u501f\u52a9\u4e2d\u56fd\u6563\u88c2\u4e2d\u5b50\u6e90\uff08CSNS\uff09\u7684\u5c0f\u89d2\u4e2d\u5b50\u6563\u5c04\uff08SANS\uff09\u6280\u672f\uff0c\u5b9a\u91cf\u63ed\u793a\u4e86Cr<\/strong>2<\/sub><\/strong><\/sub><\/strong>(Ta, Nb)<\/strong>\u5728800\u00b0C\u4e0b\u7684\u7c97\u5316\u7cfb\u6570\u4ec5\u4e3a19.6 nm\u00b3\u00b7s\u207b\u00b9\uff0c\u76f8\u6bd4Cr<\/strong>2<\/sub><\/strong><\/sub><\/strong>Nb<\/strong>\u768446.7 nm3<\/sup>\u00b7s-1<\/sup>\u964d\u4f4e\u4e8658%\u3002\u540c\u65f6\uff0cTa\u7684\u6dfb\u52a0\u663e\u8457\u6291\u5236\u4e86\u518d\u7ed3\u6676\u548c\u4f4d\u9519\u56de\u590d\uff0c\u4f7f\u5408\u91d1\u7684\u8f6f\u5316\u6e29\u5ea6\u4eceTa-free\u5408\u91d1\u7684779 \u00b0C\u5927\u5e45\u63d0\u5347\u81f3839 \u00b0C\u3002\u5728600 \u00b0C\u670d\u5f79\u6e29\u5ea6\u4e0b\uff0c\u8be5\u5408\u91d1\u4ecd\u4fdd\u6301256 MPa\u7684\u5c48\u670d\u5f3a\u5ea6\u548c283 W\/m\u00b7K\u7684\u9ad8\u70ed\u5bfc\u7387\uff0c\u5c55\u73b0\u51fa\u4f18\u5f02\u7684\u5f3a\u5ea6<\/strong>\u3001\u5bfc\u70ed\u4e0e\u8010\u70ed<\/strong>\u534f\u540c\u6027\u80fd\u3002\u8be5\u7814\u7a76\u4e3a\u8010\u70ed\u94dc\u5408\u91d1\u7684\u6790\u51fa\u76f8\u8c03\u63a7\u63d0\u4f9b\u4e86\u65b0\u601d\u8def\uff0c\u901a\u8fc7\u5728Laves\u76f8\u4e2d\u56fa\u6eb6\u6162\u6269\u6563\u5143\u7d20\u6765\u6291\u5236\u9ad8\u6e29\u7c97\u5316\uff0c\u6709\u671b\u63a8\u52a8\u589e\u6750\u5236\u9020\u94dc\u5408\u91d1\u5728\u65b0\u4e00\u4ee3\u822a\u5929\u63a8\u8fdb\u7cfb\u7edf\u7b49\u6781\u7aef\u670d\u5f79\u73af\u5883\u4e2d\u7684\u5de5\u7a0b\u5e94\u7528\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u56fe 1\u5408\u91d1\u8bbe\u8ba1\u601d\u8def\u4e0e\u7efc\u5408\u6027\u80fd\uff1a(a) \u5e38\u89c1\u5f3a\u5316\u5143\u7d20\u5728\u94dc\u4e2d\u7684\u56fa\u6eb6\u5ea6\u4e0e\u6269\u6563\u7cfb\u6570\u5bf9\u6bd4\uff1b(b) \u5e73\u8861\u76f8\u56fe\uff1b(c) \u786c\u5ea6\u968f\u70ed\u66b4\u9732\u6e29\u5ea6\u7684\u53d8\u5316\uff1b(d) \u70ed\u5bfc\u7387\uff1b(e) 600 \u00b0C\u62c9\u4f38\u66f2\u7ebf\uff1b(f) \u4e0e\u5176\u4ed6\u8010\u70ed\u94dc\u5408\u91d1\u7684\u6027\u80fd\u5bf9\u6bd4\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u56fe 2 \u4e0d\u540c\u70ed\u66b4\u9732\u6761\u4ef6\u4e0b\u7684\u5fae\u89c2\u7ed3\u6784\u6f14\u53d8\u4e0eEBSD\u8868\u5f81\uff1a(a) \u53cc\u5cf0\u6676\u7c92\u7ed3\u6784\uff1b(b) \u7ec7\u6784\u6781\u56fe\uff1b(c) \u9ad8\u500d\u53d6\u5411\u56fe\uff1b(d) \u518d\u7ed3\u6676\u5206\u5e03\uff1b(e) \u6676\u754c\u53d6\u5411\u5dee\uff1b(f) GND\u5bc6\u5ea6\u5206\u5e03\uff1b(g) \u5404\u5fae\u89c2\u53c2\u91cf\u7684\u7edf\u8ba1\u6f14\u53d8\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u56fe 3 \u7eb3\u7c73\u6790\u51fa\u76f8\u7684\u7ed3\u6784\u4e0e\u5316\u5b66\u8868\u5f81\uff1a(a) HAADF\u56fe\u50cf\u53ca\u5143\u7d20\u9762\u5206\u5e03\uff1b(b) \u7ebf\u626b\u6210\u5206\u5206\u6790\uff1b(c) \u9ad8\u5206\u8fa8TEM\u53caFFT\uff1b(d) \u539f\u5b50\u5206\u8fa8HAADF-STEM\uff1b(e) \u539f\u5b50\u5c3a\u5ea6\u5143\u7d20\u5206\u5e03\uff1b(f) \u6676\u4f53\u7ed3\u6784\u793a\u610f\u56fe\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u56fe 4 \u4e0d\u540c\u70ed\u66b4\u9732\u6e29\u5ea6\u4e0b\u4e24\u79cd\u5408\u91d1\u7eb3\u7c73\u6790\u51fa\u76f8\u7684\u5c3a\u5bf8\u5206\u5e03\u5bf9\u6bd4\uff08SANS\u62df\u5408\u7ed3\u679c\uff09\u3002<\/p>\n\n\n\n

\u8868 1\u57fa\u4e8eSANS\u5206\u6790\u7684\u6790\u51fa\u76f8\u5e73\u5747\u76f4\u5f84\u53ca\u9ad8\u6e29\u7c97\u5316\u7cfb\u6570<\/p>\n\n\n\n

Heat exposure temperature<\/td>Pristine<\/td>500 \u00b0C<\/td>700 \u00b0C<\/td>800 \u00b0C<\/td><\/tr>
Ta-doped<\/td>Davg.<\/sub> <\/sub>(nm)<\/td>~33.6<\/td>~34.8<\/td>~39.9<\/td>~47.7<\/td><\/tr>
K” (nm3<\/sup>\u00b7s-1<\/sup>)<\/td>–<\/td>1.1<\/td>7.1<\/td>19.6<\/td><\/tr>
Ta-free<\/td>Davg.<\/sub> <\/sub>(nm)<\/td>~34.8<\/td>~37.1<\/td>~43.2<\/td>~59.5<\/td><\/tr>
K” (nm3<\/sup>\u00b7s-1<\/sup>)<\/td>–<\/td>2.5<\/td>10.7<\/td>46.7<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"

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