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通过对新型高强韧耐磨钢的冲击强度,硬度和耐磨性的测试,利用SEM观察其金相组织与磨损形貌,研究了热处理工艺对新型高强韧耐磨钢的组织和力学性能的影响。结果表明,试样经过650~700℃(预热)×1~2 h+960~970℃(油淬)×2~3 h+250~270℃×6~8 h(回火)处理后其组织性能最好,此时试样基体组织为细小板条马氏体+残余奥氏体+碳化物。
Through the test of the impact strength, hardness and wear resistance of the new high toughness wear resistant steel, the microstructure and wear morphology of the new high toughness wear resistant steel were observed by SEM. The effect of heat treatment process on the microstructure and mechanical properties of the new high toughness wear resistant steel was studied . The results showed that the specimens were tempered at 650 ~ 700 ℃ (preheating) × 1 ~ 2 h + 960 ~ 970 ℃ (oil quenching) × 2 ~ 3 h + 250 ~ 270 ℃ × 6 ~ 8 h The best tissue performance, the sample matrix microstructure of small lath martensite + retained austenite + carbide.