结果表明，在焊接热模拟条件下，原始奥氏体晶粒尺寸是影响机械性能的主要因素。
Results show that after various welding simulations, the grain size of austenite imposes the most significant effect on the tensile and impact properties;
形变参数对相变过程有着显著的影响，奥氏体化温度决定了奥氏体原始晶粒尺寸同样影响着形变诱导铁素体相变过程。
Deforming parameters can have remarkable effect and the austeniting temperature can determine the original austenite grain size, consequently influence the process of DIFT.
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