回火造成磨损抗力降低。
Tempering treatment caused decreasing of abrasion resistance.
由于共晶碳化物高温稳定性不良，使得其不能发挥应有的提高材料磨损抗力的作用，导致合金磨损体积急剧增加，磨损抗力下降。
The obtained results show that the carbide can not act as a resistant to wear if its chemical stability at elevated temperature is too bad, and the wear resistance of the alloy is decreased rapidly.
试验得出，残余奥氏体可阻止疲劳裂纹的萌生和扩展，提高冲击疲劳抗力，降低冲击疲劳磨损。
It is indicated that retained austenite in microstructure can inhibit the initiation and propagation of fatigue crack, improve the resistance to impact fatigue and decrease impact fatigue wear.
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