腐蚀条件下中碳合金钢冲击磨损特性及机理  

Impact Wear Characteristics and Mechanism of Medium Carbon Alloy Steel on Corrosive Condition

作　　者：杜晓东[1] 丁厚福[1] 崔方明[2] 

机构地区：[1]合肥工业大学材料科学与工程学院 [2]浙江大学材料与化学工程学院

出　　处：《农业机械学报》2006年第1期136-140,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：高等学校博士学科点专项科研基金资助项目(项目编号:20040359004);教育部科学技术研究重点项目(项目编号:01104)

摘　　要：中碳合金钢经适当热处理后,得到M+B+AR复相组织,在冲击腐蚀磨损条件下研究其磨损特性和机理。结果表明中碳合金钢的耐磨性随冲击功增加而明显下降;剥落裂纹起源于表面,在亚表层中扩展;冲击功由2.0J增至3.5J,中碳合金钢在冲击腐蚀条件下的磨损失效机制由以浅层剥落为主向以深层剥落为主转变。M ＋ B ＋ A R triphase microstructure had been obtained after proper heat treatment for medium carbon alloy steel. Its wearing characteristics and mechanism were investigated on impact corrosion-abrasion condition. Test results showed that, with the increase of impact power, the wearing resistance of medium carbon alloy steel on impact corrosion condition dropped obviously. The flake crack initiated in surface layer and developed in subsurface stratum. The leading failure mechanism of medium carbon alloy steel changed from shallow flaking to deep flaking with the impact power increasing from 2.0 J to 3.5 J. The angle of crack development increases with the increasing of impact power. The formation and development process of flake crack were accelerated by corrosion.

关 键 词：中碳合金钢 冲击腐蚀磨损 特性 机理 

分 类 号：TG141[一般工业技术—材料科学与工程] TG115.5[金属学及工艺—金属材料]