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对25Cr2Mo1V钢螺栓脆化及三种恢复热处理状态的试样进行示波冲击,在详细分析各种冲击信息的基础上肯定了单纯的高温回火只能使韧性部分恢复,材料仍处于半脆性状态内;而正火+高温回火可使韧性完全恢复,材料进入完全韧性状态——为恢复热处理工艺的优化提供了可靠的依据.
On 25Cr2Mo1V steel bolt embrittlement and three recovery heat treatment state of the sample oscillometric impact on the basis of a detailed analysis of a variety of impact information affirmed a simple high temperature tempering can only restore the ductile part of the material is still in a semi-brittle state ; And normalizing + high temperature tempering can make the toughness completely restored, the material into the state of complete toughness - to provide a reliable basis for the restoration of heat treatment process optimization.