Comparative study on wear of hot-working die steels
The wear behavior and wear mechanism of hot-working die steels H13 and H21 were studied using a pin-on-disc high-temperature wear machine.H21 steel presented higher wear resistance than H13 steel at 25 and 400 ℃.However the wear rate of H21 steel increased rapidly and was substantially higher than that of H13 steel under a load of 150 N or above at 200 ℃.Tribo-oxide layer possessing protective effect generated at 200 ℃ for H13 steel,but appeared at 400 ℃ for H21 steel with obviously lower amount than that of H13 steel due to relatively high alloy contents.Higher wear resistance of H21 steel is attributed to the undissolved carbides and high thermal strength.
Hot-working die steel Wear behavior Wear mechanism Dry Sliding
ZHANG Qiu-yang WANG Shu-qi WANG Lan
School of Materials Science and Engineering,Jiangsu University,Zhenjiang 212013,China
国际会议
武汉
英文
559-562
2013-06-15（万方平台首次上网日期，不代表论文的发表时间）