The effect of rare earth on impact fatigue property of cast semi steel was studied.
研究了稀土元素对半钢冲击疲劳性能的影响。
The experimental results show that adding rare earth into cast semi steel can defer the time of forming fatigue crack, reduce the speed of crack propagating and increase the impact fatigue resistance.
结果表明，稀土能推迟裂纹萌生的时间，降低裂纹扩展速率，提高其冲击疲劳抗力。
The effect of rare earth on impact fatigue property of cast semi steel was studied.
研究了稀土及热处理对半钢组织中碳化物的形貌与力学性能的影响。
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