40CrNiMo钢低温冲击性能研究与应用
Metal Working(2021)
Abstract
通过热处理工艺试验,在-70~20℃内测量40CrNiMo钢V型缺口冲击吸收能量,研究该材料的低温冲击性能和断口形貌.试验结果表明:随着温度的降低,冲击吸收能量也随之降低,且在-70~-40℃之间冲击吸收能量下降最为明显.从断口形貌分析,40C r N i M o钢韧脆转变温度约为-60℃,从而为该材料在低温条件下应用提供了理论依据.
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