The tensile and impact properties of the specimens were measured at room temperature.
室温下测量了试样的拉伸和冲击性能。
The preheating and interpass temperatures are 25 ~ 50c. Tensile and impact properties of the joints are almost the same as that of the matrix.
预热温度及层间温度控制在25 ~ 50为宜，接头拉伸和冲击性能与母材相匹配。
Results show that after various welding simulations, the grain size of austenite imposes the most significant effect on the tensile and impact properties;
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。
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