淬火温度对含硼高铬白口铸铁组织和性能的影响  

Effects of Quenching Temperature on Structure and Properties of Boron-containing High-Cr White Cast Iron

作　　者：穆晶[1] 辛啟斌[1] 王琳琳[1] 曹海叶[1] 陈康生[2] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004 [2]首秦金属材料有限公司,河北秦皇岛066326

出　　处：《铸造技术》2010年第9期1177-1181,共5页Foundry Technology

摘　　要：研究淬火温度对不同含硼量高铬白口铸铁组织、力学性能和耐磨性的影响。试验结果表明,随着淬火温度的升高,冲击韧度先降低后升高,并在1 000℃淬火的冲击韧度最低,硬度则表现出了相反的规律。硼含量为0.32%的高铬白口铸铁在1 050℃淬火时综合力学性能最佳,宏观硬度为53.6 HRC,冲击韧度为5.2 J/cm2,相对耐磨性为1.020。Different quenching temperatures are employed to research the effect of quenching temperature on the microstructure, mechanical and wear resistance of boron-containing High-Or white cast iron. The results indicate that with increasing of quenching temperature, impact toughness decreases at first and then increases, and it reaches a minimum value when the quenching temperature is 1 000 ℃, and the law is contrary to that of hardness. The temperature, at which the combination mechanical properties of High-Or white iron with 0.32% boron is best, is 1 050℃O, and the hardness is HRO 53.6, the impact toughness is up to 5.2 J/cm^2, meanwhile the relative wear resistance is 1. 020.

关 键 词：含硼高铬白口铸铁 淬火温度 显微组织 力学性能 耐磨性 

分 类 号：TG252[金属学及工艺—铸造]