铸造2011，Vol.60Issue(8)：779-783,5.
钒对含碳化物等温淬火球墨铸铁组织及性能的影响
Effects of Vanadium on Microstructures and Properties of CADI
马永华 1孙玉福 1赵靖宇 1肖志云 1杨会龙 1王刘利 1王璐 1司光东1
作者信息
- 1. 郑州大学材料科学与工程学院,河南郑州450002
- 折叠
摘要
Abstract
The effects of different vanadium content on microstructure and properties of carbide austempered ductile iron (CADI) were researched. The results show that the amount of carbide in the as-cast specimens increases with the increase of vanadium content. After austenited at 900 ℃ for 1.5 h and austempered at 250 ℃ for 1.5 h, the sample containing 0.4% vanadium has the best mechanical properties. After heat treatment, the microstructure of the sample is composed of resiudal austenite, lower bainite and 10% carbide. Its tensile strength is 1 070 Mpa, hardness is HRC 52.9, impact toughness is 28.26 J/cm2 and wear rate is 0.54 mg/m, relative wear resistance is increased by 24% than that of samples without vanadium.关键词
含碳化物等温淬火球墨铸铁/钒/碳化物/硬度/抗拉强度/耐磨性Key words
CADI/vanadium/carbide/hardness/tensile test/wear resistance分类
矿业与冶金引用本文复制引用
马永华,孙玉福,赵靖宇,肖志云,杨会龙,王刘利,王璐,司光东..钒对含碳化物等温淬火球墨铸铁组织及性能的影响[J].铸造,2011,60(8):779-783,5.
