摘要
采用Gleeble-1500D热模拟实验机测定了高钒高速钢在1050℃淬火后250、550、600℃回火连续冷却时的膨胀曲线,以确定回火温度对组织的影响;利用SEM、TEM和X射线衍射等方法对不同回火温度下的试样组织进行了分析;利用HST-100型摩擦磨损试验机研究了不同回火温度下材料的磨损性能。结果表明,在磨粒磨损使用条件下,高钒高速钢的最佳热处理工艺为1050℃淬火后550℃回火,此时,由于残余奥氏体量减少,其耐磨性最好。
The expansion curves during the procedure of continuous cooling for high vanadium high speed steel （HSS）was tempered at 250℃, 550 ℃ and 600 ℃ after 1 050℃ quenching were determined by the Gleeble-1500D thermal simulation test device in order to determine the effect of tempering temperature on the microstructure, the microstructure of samples at different tempering temperatures were analyzed by means of SEM, TEM and X-ray diffraction. The wear resistance of the material at different tempering temperatures was studied by the HST-100 friction wear testing machine. The results show that the abrasive wear performance of the material is excellent under 550 ℃ tempering after 1 050 ℃ quenching because of the decrease of the amount of retained austenite, therefore the heat treatment of 550 ℃ tempering after quenching is optimal.
出处
《铸造技术》
CAS
北大核心
2009年第8期1010-1013,共4页
Foundry Technology
基金
国家自然科学基金项目(50741034)
河南省杰出人才创新基金(074200510004)
关键词
高钒高速钢
回火
显微组织
磨粒磨损
耐磨性
High vanadium high speed steel
Tempering
Microstructure
Abrasive attrition
Wearresistance
