Effect of Alloying Composition on Microstructure and Mechanical Properties of Ultranarrow Gap Welded Joints of U71Mn Rail Steel

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="8"><hr/></td></tr><tr class="thead"><td class="align_left">Materials</td><td class="align_center">C</td><td class="align_center">Mn</td><td class="align_center">Si</td><td class="align_center">S</td><td class="align_center">P</td><td class="align_center">Cr</td><td class="align_center">Ni</td></tr><tr><td class="thead-hr" colspan="8"><hr/></td></tr><tr><td class="align_left">U71Mn rail steel</td><td class="align_center">0.72</td><td class="align_center">1.21</td><td class="align_center">0.22</td><td class="align_center">0.006</td><td class="align_center">0.018</td><td class="align_center">—</td><td class="align_center">—</td></tr><tr><td class="align_left">H08Mn2Si</td><td class="align_center">0.11</td><td class="align_center">1.9</td><td class="align_center">0.8</td><td class="align_center">0.03</td><td class="align_center">0.03</td><td class="align_center">0.2</td><td class="align_center">0.2</td></tr><tr class="table-tr"><td colspan="8"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Chemical composition of rail steel and welding wire (wt%).</div>

Advances in Materials Science and Engineering

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Table 1

Table 1: Effect of Alloying Composition on Microstructure and Mechanical Properties of Ultranarrow Gap Welded Joints of U71Mn Rail Steel 