Experimental results show that TME in 40Si2Mn2 steel can not be eliminated by Mo, but Mo addition can decrease the ductile-brittle transition temperature(DBTT) of the steel and make the impact test temperature for revealling TME decreased.

• 试验结果表明钼不能消除40Si2Mn2钢的TME,但可以降低钢的韧性脆性转变温度(DBTT),从而使显示钢的TME的冲击试验温度降低;