不同应力状态下Mn13铸钢冲击腐蚀磨损特性及机理研究  

Study on impact corrosion-abrasion characteristics and mechanism of Mn13 cast steel in high stress state

作　　者：杜晓东[1] 丁厚福[1] 崔方明[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009

出　　处：《兵器材料科学与工程》2006年第4期18-22,共5页Ordnance Material Science and Engineering

基　　金：教育部博士点基金(20040359004);教育部重点研究项目(01104)

摘　　要：研究了Mn13铸钢在高应力状态下,冲击角为90°和60°时的冲击腐蚀磨损特性及机理,结果表明:冲击角为90°时,冲击腐蚀磨损特性曲线较平缓,磨损失效机制为浅层剥落,裂纹起源于亚表层中接近表面处,并平行于表面扩展;冲击角为60°时,合金磨损量显著增加,裂纹起源于表层,并向亚表层深处扩展,磨损失效机制为深层剥落。Impact corrosion-abrasion characteristics and mechanism of Mnl3 cast steel were investigated under high power impact. Impact angles were 60° and 90° respectively. The results have indicated that： when the impact angle is 90°, the wearcharacteristics curve is gentle, and the major abrasion mechanism is superficial spoiling. In this case, the cracks originate from subsurface and develop parallelly to the surface. When the impact angle is 60°, the wear loss increases obviously, and the cracks originate from surface and develop in subsurface, which induce the deeper spalling.

关 键 词：腐蚀磨损机制 磨损特性 Mn13铸钢 冲击角 

分 类 号：TG142.7[一般工业技术—材料科学与工程]