{"id":240869,"date":"2022-08-09T06:52:29","date_gmt":"2022-08-08T22:52:29","guid":{"rendered":"http:\/\/www.cailiaoniu.com\/?p=240869"},"modified":"2022-08-08T16:55:40","modified_gmt":"2022-08-08T08:55:40","slug":"%e6%b8%af%e5%9f%8e%e5%a4%a7%e5%93%88%e5%b7%a5%e5%a4%a7acta-materialia%ef%bc%9a%e5%90%8c%e6%ad%a5%e6%8f%90%e9%ab%98%e7%ba%b3%e7%b1%b3%e9%a2%97%e7%b2%92%e5%a2%9e%e5%bc%ba%e5%9e%8b%e9%ab%98","status":"publish","type":"post","link":"http:\/\/www.cailiaoniu.com\/?p=240869","title":{"rendered":"\u6e2f\u57ce\u5927&\u54c8\u5de5\u5927Acta\u00a0Materialia\uff1a\u540c\u6b65\u63d0\u9ad8\u7eb3\u7c73\u9897\u7c92\u589e\u5f3a\u578b\u9ad8\u71b5\u5408\u91d1\u5728\u5ba4\u6e29\u548c\u9ad8\u6e29\u4e0b\u7684\u7efc\u5408\u5f3a\u97e7\u6027\u6c34\u5e73"},"content":{"rendered":"

\u3010\u7814\u7a76\u80cc\u666f\u3011<\/b><\/strong><\/p>\n

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\u3010\u6210\u679c\u63a0\u5f71\u3011<\/strong><\/p>\n

\u6700\u8fd1\uff0c\u9999\u6e2f\u57ce\u5e02\u5927\u5b66\u7684\u6768\u6d9b\u6559\u6388\u56e2\u961f\uff0c\u643a\u624b\u54c8\u5c14\u6ee8\u5de5\u4e1a\u5927\u5b66\u8d75\u6021\u6f5e\u6559\u6388\u56e2\u961f\u548c\u4e0a\u6d77\u4ea4\u901a\u5927\u5b66\u9648\u54f2\u6559\u6388\u7b49\u7814\u7a76\u4eba\u5458\uff0c\u5229\u7528\u8ba1\u7b97\u8f85\u52a9\u70ed\u529b\u5b66\u8ba1\u7b97\u4e0e\u6a21\u62df\uff0c\u5408\u7406\u8bbe\u8ba1\u4e86\u65b0\u578b\u9ad8\u5f3a\u9ad8\u97e7<\/b><\/strong>Ni<\/b><\/strong>39.9<\/b><\/sub><\/strong>Co<\/b><\/strong>20<\/b><\/sub><\/strong>Fe<\/b><\/strong>30-x<\/b><\/sub><\/strong>Cr<\/b><\/strong>x<\/b><\/sub><\/strong>Al<\/b><\/strong>6<\/b><\/sub><\/strong>Ti<\/b><\/strong>4<\/b><\/sub><\/strong>B<\/b><\/strong>0.1<\/b><\/sub><\/strong>\uff08x=0\u300110\u300115\u548c20at.%\uff09\u9ad8\u71b5\u5408\u91d1\uff08HEA\uff09<\/b><\/strong>\u3002<\/b><\/strong>\u7814\u7a76\u8868\u660e\uff0c\u5f53\u4e0d\u65ad\u7528Cr\u66ff\u4ee3Fe\u65f6\uff0c\u4fdd\u6301\u4e86\u7a33\u5b9a\u7684\u5171\u683c\u6c89\u6dc0\u5fae\u89c2\u7ed3\u6784\uff0c\u5e76\u7cfb\u7edf\u5730\u7814\u7a76\u4e86\u6f5c\u5728\u7684\u53d8\u5f62\u5fae\u89c2\u673a\u5236\u3002\u7814\u7a76\u53d1\u73b0\uff0c\u76f8\u5bf9\u4e8eL12<\/sub>\u578b\u7eb3\u7c73\u9897\u7c92\uff0cCr\u4e3b\u8981\u5206\u4e3a\u9762\u5fc3\u7acb\u65b9\uff08FCC\uff09\u57fa\u4f53\u3002Cr\u6d53\u5ea6\u7684\u589e\u52a0\u663e\u8457\u964d\u4f4e\u4e86\u57fa\u4f53\u7684\u5c42\u9519\u80fd\uff08SFE\uff09\uff0c\u5e76\u5bfc\u81f4\u5c42\u9519\u4e3b\u5bfc\u7684\u53d8\u5f62\u884c\u4e3a\uff0c\u4ece\u800c\u5728\u5ba4\u6e29\u4e0b\u540c\u65f6\u63d0\u9ad8\u4e86\u5f3a\u5ea6\u548c\u5851\u6027\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0c\u5f53\u5728600\u00b0C\u4e0b\u6d4b\u8bd5\u65f6\uff0c\u65e0Cr\u00a0\u7684HEA\u53d1\u751f\u4e86\u7531\u73af\u5883\u8bf1\u5bfc\u6676\u754c\u6c27\u5316\u635f\u4f24\u5f15\u8d77\u7684\u8106\u6027\u6cbf\u6676\u65ad\u88c2\u3002\u6709\u8da3\u7684\u662f\uff0c\u5f53Cr\u63ba\u6742\u9ad8\u8fbe20 at.%\uff0c\u7531\u4e8e\u6297\u6c27\u5316\u6027\u7684\u63d0\u9ad8\uff0c\u53ef\u4ee5\u5b8c\u5168\u6d88\u9664\u8fd9\u79cd\u6676\u95f4\u8106\u5316\uff0c\u4ece\u800c\u5728\u9ad8\u5f3a\u5ea6\u6c34\u5e73\u4e0b\u4ea7\u751f\u660e\u663e\u7684\u8106-\u97e7\u8f6c\u53d8\uff08\u4ece3.4%\u523025.2%\uff09\u3002\u8be5\u7814\u7a76\u5de5\u4f5c\u4e3a\u7eb3\u7c73\u9897\u7c92\u589e\u5f3aHEA\u7684\u53ef\u63a7\u5408\u91d1\u8bbe\u8ba1\u63d0\u4f9b\u4e86\u65b0\u7684\u89c1\u89e3\uff1b\u5728\u5f53\u524d\u5de5\u4f5c\u7684\u63a8\u52a8\u4e0b\uff0c\u53ef\u4ee5\u8fdb\u4e00\u6b65\u5f00\u53d1\u51fa\u66f4\u591a\u7684\u5177\u6709\u4f18\u5f02\u70ed\u673a\u68b0\u6027\u80fd\u7684\u65b0\u578b\u7ed3\u6784\u5408\u91d1\u3002\u76f8\u5173\u7814\u7a76\u6210\u679c\u4ee5\u00a0\u201cDesigning nanoparticles-strengthened high-entropy alloys with simultaneously enhanced strength-ductility synergy at both room and elevated temperatures\u201d\u4e3a\u6807\u9898\u53d1\u8868\u5728Acta Materialia\u671f\u520a\u3002\u8bba\u6587\u94fe\u63a5\uff1ahttps:\/\/doi.org\/10.1016\/j.actamat.2022.118216<\/u><\/a>\u3002<\/p>\n

\"\" <\/p>\n

\u8bba\u6587\u7b2c\u4e00\u4f5c\u8005\uff1a<\/b><\/strong>\u9999\u6e2f\u57ce\u5e02\u5927\u5b66\u4faf\u664b\u96c4\u535a\u58eb<\/p>\n

\u8bba\u6587\u901a\u8baf\u4f5c\u8005\uff1a<\/b><\/strong>\u9999\u6e2f\u57ce\u5e02\u5927\u5b66\u6768\u6d9b\u6559\u6388\u3001\u54c8\u5c14\u6ee8\u5de5\u4e1a\u5927\u5b66\uff08\u6df1\u5733\uff09\u8d75\u6021\u6f5e\u6559\u6388<\/p>\n

\u5176\u4ed6\u5408\u4f5c\u8005\uff1a<\/b><\/strong>\u9999\u6e2f\u57ce\u5e02\u5927\u5b66\u5218\u5c11\u98de\u535a\u58eb\u3001\u66f9\u535a\u8f69\u535a\u58eb\u3001\u683e\u519b\u534e\u535a\u58eb\uff1b\u4e0a\u6d77\u4ea4\u901a\u5927\u5b66\u9648\u54f2\u6559\u6388\uff1b\u54c8\u5c14\u6ee8\u5de5\u4e1a\u5927\u5b66\uff08\u6df1\u5733\uff09\u5218\u5174\u519b\u6559\u6388\u7b49\u7b49\u3002<\/p>\n

\u56fe\u6587\u6458\u8981\uff1a<\/b><\/strong><\/p>\n

\"\"<\/p>\n

\u56fe1<\/b><\/strong>.<\/b><\/strong>\u00a0Thermodynamic modeling of the Ni-Co-Fe-Cr-Al-Ti HEAs analyzed by Thermo-Calc software with a TTNI8 database.<\/p>\n

\"\"<\/p>\n

\u56fe<\/b><\/strong>3. <\/b><\/strong>Elemental distribution between the FCC and L12<\/sub>\u00a0phases in the Ni39.9<\/sub>Co20<\/sub>Fe10<\/sub>Cr20<\/sub>Al6<\/sub>Ti4<\/sub>B0.1 <\/sub>(at.%) HEA.<\/p>\n

\"\"<\/b><\/strong><\/p>\n

\u56fe<\/b><\/strong>4.<\/b><\/strong>\u00a0Room-temperature and elevated temperature \uff08600 o<\/sup>C\uff09mechanical responses of L12<\/sub>-strengthened Cr0 \u223c\u00a0Cr20 HEAs.<\/p>\n

\"\" <\/p>\n

\u56fe<\/b><\/strong>6. <\/b><\/strong>The distinct fracture morphologies of the Cr0 \u223c\u00a0Cr20 HEAs when tested at 600 \u00b0C in air.<\/p>\n

\"\"<\/p>\n

\u56fe<\/b><\/strong>11. \u00a0<\/b><\/strong>Tensile curves of the Cr0 HEA at 600 \u00b0C in air and vacuum conditions, with the fractured face showing ductile fracture with abundant dimples under the vacuum condition.<\/p>\n

\"\"<\/p>\n

\u56fe<\/b><\/strong>13. \u00a0<\/b><\/strong>(a) The cross-sectional STEM image and corresponding oxygen distribution at a small crack tip of the post-tensile Cr0 HEA at 600 \u00b0C, showing the penetration of oxygen along the grain boundary beneath the oxides in the Cr0 HEA. (b) Schematic representation of the intergranular embrittlement indicating the stress-assisted diffusion of oxygen during the tensile test at elevated temperature.<\/p>\n","protected":false},"excerpt":{"rendered":"

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