爆炸硬化对高锰钢冲击磨损性能的影响  

Effects of Explosion Hardening on Impact Abrasive Wear Properties of Hadifield Steel

作　　者：张观军[1] 杨涤心[1] 魏世忠 龙锐 

机构地区：[1]河南科技大学材料学院,河南洛阳471003 [2]河南省耐磨材料工程技术研究中心,河南洛阳471003

出　　处：《矿冶工程》2007年第5期69-72,共4页Mining and Metallurgical Engineering

基　　金：河南省科技厅重大攻关项目(编号0422020600)

摘　　要：对Mn13Cr2高锰钢进行了爆炸硬化处理。以鹅卵石为磨料,在MLD-10动载磨料磨损试验机上对比研究了爆炸硬化处理前后Mn13Cr2高锰钢的冲击磨损性能,以探讨爆炸硬化对Mn13Cr2冲击磨损性能的影响。结果表明,爆后高锰钢在低冲击能量下使用,其冲击耐磨性得到提高,当冲击功为0.5 J时,爆后高锰钢耐磨性为10.8,达到最佳;在高冲击能量下磨损,其冲击耐磨性低于爆前高锰钢,且爆后高锰钢的冲击耐磨性随冲击功的增加大幅下降。爆炸硬化使高锰钢表层硬度和冲击韧性产生变化,是高锰钢冲击耐磨性发生变化的主要原因。Hadifield steel Mnl3Cr2 was treated with explosion hardening. Comparative studies on impact abrasive wear properties of hadifield steel Mnl3Cr2 before and after explosion hardening were conducted to explore the effects of explosion hardening on impact abrasive wear properties of Mnl3Cr2 in the experimental machine of dynamic load abrasion tester MLD - 10 using cobble as abrasive. Results showed that under low impact energy the impact wear resistance of exploded hadifield steel increasing and the optimal impact wear resistance of hadifield steel after explosion was 10.8 when ballistic work was 0.5 J. Under high impact energy, the impact wear resistance of the exploded hadifield steel was lower than that of the unexploded one, and the impact wear resistance of the exploded hadifield steel decreased with the increase of impact energy by a big margin. The change of the impact wear resistance of hadifield steel was due to the changes of its superficial hardness and dynamic ductility by explosion hardening.

关 键 词：爆炸力学 爆炸硬化 高锰钢 冲击 磨料磨损 

分 类 号：TJ459[兵器科学与技术—火炮、自动武器与弹药工程] TG115.5[金属学及工艺—物理冶金]