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2023\u5e741\u670813\u65e5\uff0c\u6765\u81ea\u4e1c\u5317\u5927\u5b66\u8f67\u5236\u6280\u672f\u53ca\u8fde\u8f67\u81ea\u52a8\u5316\u56fd\u5bb6\u91cd\u70b9\u5b9e\u9a8c\u5ba4\u7684\u738b\u56fd\u680b\u9662\u58eb\/\u8881\u56fd\u6559\u6388\u7814\u7a76\u56e2\u961f\uff0c\u7ed3\u5408\u591a\u9053\u6b21\u6a2a\u5411\u953b\u9020\u3001\u6df1\u51b7\u5904\u7406\u548c\u56de\u706b\u5904\u7406\uff0c\u5728\u5747\u5300\u5ef6\u4f38\u7387\u4e3a20%\u7684\u60c5\u51b5\u4e0b\uff0c\u83b7\u5f97\u4e86\u6297\u62c9\u5f3a\u5ea6\u4e3a>2.2 GPa\u7684\u4e2d\u9530\u94a2\u3002\u7814\u7a76\u8868\u660e\uff1a\u7531\u5c42\u72b6\u548c\u53cc\u91cd\u62d3\u6251\u6392\u5217\u7684\u9a6c\u6c0f\u4f53\u548c\u5f25\u6563\u7684\u6b8b\u4f59\u5965\u6c0f\u4f53\u7ec4\u6210\u7684\u68af\u5ea6\u5fae\u89c2\u7ec4\u7ec7\uff0c\u53ef\u4ee5\u8bf1\u53d1\u53d8\u5f62\u8fc7\u7a0b\u4e2d\u677f\u6761\u754c\u9762\u4f4d\u9519\u6ed1\u79fb\u3001\u754c\u9762\u5851\u6027\u548c\u76f8\u53d8\u8bf1\u53d1\u5851\u6027\uff08TRIP\uff09\u7b49\u591a\u79cd\u589e\u5f3a\u589e\u5851\u673a\u5236\uff0c\u4fc3\u4f7f\u6750\u6599\u5177\u6709\u6301\u7eed\u8f83\u9ad8\u7684\u52a0\u5de5\u786c\u5316\u80fd\u529b\uff0c\u5927\u5e45\u5ea6\u63d0\u5347\u5176\u5f3a\u5ea6\u548c\u5851\u6027\u3002\u672c\u5de5\u4f5c\u63d0\u51fa\u7684\u8bbe\u8ba1\u7b56\u7565\u751f\u4ea7\u4e862GPa\u7684\u9ad8\u5f3a\u5ea6\u4e14\u97e7\u6027\u826f\u597d\u5f3a\u7684\u94a2\uff0c\u6253\u7834\u4e86\u8d85\u9ad8\u5f3a\u94a2\u5bf9\u590d\u6742\u5236\u5907\u5de5\u827a\u548c\u6602\u8d35\u5408\u91d1\u6210\u5206\u7684\u4f9d\u8d56\uff0c\u5e76\u5177\u6709\u5927\u89c4\u6a21\u5de5\u4e1a\u751f\u4ea7\u7684\u6f5c\u529b\u3002\u76f8\u5173\u6210\u679c\u4ee5\u201cDuctile 2-GPa steels with hierarchical substructure<\/em>\u201d\u4e3a\u9898\u53d1\u8868\u5728\u56fd\u9645\u9876\u7ea7\u671f\u520aScience<\/em><\/strong>\u671f\u520a\u4e0a\u3002<\/p>\n \u4e09\u3001\u6838\u5fc3\u521b\u65b0\u70b9<\/p>\n (1) \u521b\u65b0\u63d0\u51fa\u201c\u9a6c\u6c0f\u4f53\u62d3\u6251\u5b66\u7ed3\u6784\u8bbe\u8ba1+\u4e9a\u7a33\u76f8\u8c03\u63a7\u201d\u534f\u540c\u589e\u5851\u65b0\u673a\u5236;<\/p>\n (2)<\/strong> \u83b7\u5f972GPa\u7684\u9ad8\u5f3a\u9ad8\u97e7\u6027\u94a2\uff0c\u6253\u7834\u4e86\u5bf9\u590d\u6742\u5236\u5907\u5de5\u827a\u548c\u6602\u8d35\u5408\u91d1\u6210\u5206\u7684\u4f9d\u8d56\uff0c\u5e76\u5177\u6709\u5927\u89c4\u6a21\u5de5\u4e1a\u751f\u4ea7\u7684\u6f5c\u529b\uff1b<\/p>\n \u56db\u3001\u6570\u636e\u6982\u89c8<\/p>\n \u56fe1 Fe-7.4Mn-0.34C-1Si-0.2V\u94a2\u7684\u9a6c\u6c0f\u4f53\u62d3\u6251\u5b66+\u4e9a\u7a33\u76f8\u8c03\u63a7\u7ed3\u6784\u8bbe\u8ba1\uff1b(A)\u9a6c\u6c0f\u4f53\u7ec4\u7ec7\u6e90\u4e8e\u7b49\u8f74\u5965\u6c0f\u4f53\u3002(B)\u5177\u6709\u5c42\u95f4\u754c\u9762\u7279\u5f81\u7684\u68f1\u67f1\u7ed3\u6784\u3002(C)\u9a6c\u6c0f\u4f53\u5728\u68f1\u67f1\u72b6\u5965\u6c0f\u4f53\u5185\u90e8\u8f6c\u53d8\uff0c\u5f62\u6210\u68af\u5ea6\u5316\u7ed3\u6784\u3002(D)\u91cd\u6784\u68d2\u72b6\u6bcd\u5965\u6c0f\u4f53\u7684\u5e73\u5747\u6676\u4f53\u53d6\u5411\u56fe\uff0c(E) EBSD\u76f8\u56fe\uff0c(F) SEM\u56fe\u50cf\u663e\u793a\u953b\u538b\u548c\u7a7a\u51b7\u81f3\u5ba4\u6e29\u5904\u7406\u540e\u6837\u54c1\u4e2d\u62c9\u957f\u7684\u9a6c\u6c0f\u4f53(type I)\u548c\u503e\u659c\u7684\u9a6c\u6c0f\u4f53 (type II)\u3002LD\u8868\u793a\u7eb5\u5411\u65b9\u5411\uff0cFD\u8868\u793a\u953b\u9020\u65b9\u5411\u3002(G) EBSD\u76f8\u56fe\uff0c(H)\u9a6c\u6c0f\u4f53\u9006\u6781\u56fe(IPF)\u56fe\uff0c(I)\u7ecf\u8fc7\u6df1\u51b7\u5904\u7406\u548c\u968f\u540e\u5728300\u2103\/20 min\u56de\u706b\u7684\u953b\u9020\u6837\u54c1\u7684SEM\u56fe\u50cf\u3002<\/p>\n \u56fe2 Fe-7.4Mn-0.34C-1Si-0.2V\u94a2\u7684\u663e\u5fae\u7ec4\u7ec7\uff1b(A)\u5965\u6c0f\u4f53\u7684\u5c40\u90e8\u533a\u57df\uff0c\u663e\u793a\u4e0eLD\u5e73\u884c\u7684I\u578b\u9a6c\u6c0f\u4f53\u3002(B)\u5965\u6c0f\u4f53\u7684\u5c40\u90e8\u533a\u57df\uff0c\u663e\u793a\u4e0eLD\u503e\u659c45\u00b0\u7684II\u578b\u9a6c\u6c0f\u4f53\u3002(C)\u548c(D)\u8d85\u7ec6\u6b8b\u4f59\u5965\u6c0f\u4f53\u7684\u6697\u573a\u6210\u50cf\u3002(E)\u56de\u706b\u8bd5\u6837\u7684\u4e09\u7ef4\u91cd\u6784\u3002(F) C\u548cV\u7684\u539f\u5b50\u767e\u5206\u6bd4\u3002(G)\u6cbf(F)\u4e2d12nm \u00d7 12nm \u00d7 40nm\u9ec4\u8272\u5706\u67f1\u4f53\u8f74\u7ebf\u7684\u4e00\u7ef4\u6210\u5206\u5256\u9762\u3002<\/p>\n \u56fe3 Fe-7.4Mn-0.34C-1Si-0.2V\u4e0e\u5176\u5b83\u8d85\u9ad8\u5f3a\u5ea6\u94a2\u7684\u529b\u5b66\u6027\u80fd\u6bd4\u8f83\uff1b(a) \u62c9\u4f38\u5e94\u529b-\u5e94\u53d8\u66f2\u7ebf\u53ca\u76f8\u5e94\u7684\u5e94\u53d8\u786c\u5316\u66f2\u7ebf\uff1b\uff08b\uff09 \u4e0e\u5176\u5b83\u8d85\u9ad8\u5f3a\u5ea6\u94a2\u7684\u529b\u5b66\u6027\u80fd\u6bd4\u8f83\uff1b<\/p>\n \u56fe4 Fe-7.4Mn-0.34C-1Si-0.2V\u94a2\u7684\u53d8\u5f62\u7ec4\u7ec7\uff1b\uff08A\uff0cB\uff09EBSD\u76f8\u5206\u5e03\u56fe\uff1b(C) XRD\u6d4b\u5f97\u7684\u5965\u6c0f\u4f53\u4f53\u79ef\u5206\u6570\u968f\u62c9\u4f38\u5e94\u53d8\u7684\u53d8\u5316\uff1b\uff08D\uff09\u65bd\u5bc6\u7279\u56e0\u5b50\u5206\u5e03\uff1b\uff08E\uff09\u52a0\u8f7d\u65f6\u7684I\u578b\u9a6c\u6c0f\u4f53\uff1b(F\u548cG) 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