摘要
研究了高温预处理、奥氏体化温度（Tγ）及等温淬火温度（TA）对0.5%Cr含碳化物等温淬火球墨铸铁（CADI）的韧性、硬度的影响。结果表明,高温预处理可使CADI的冲击性能提高90%以上。当硬度为51.4~55.7 HRC时,冲击吸收能量（K）可达37.7~18.3 J。高温预处理后,随着Tγ的升高,CADI的K明显提高,硬度在一定范围内略有降低;随着TA的升高,CADI硬度逐渐降低,而K在260℃时达到最高。
Effects of high temperature pretreatment,austenitizing temperature（ Tγ） and austempering temperature（ TA） on toughness and hardness properties of carbidic austempered ductile iron（ CADI） with 0. 5% Cr were investigated. The results show that high temperature pretreatment can make the impact toughness of CADI increase more than 90%. The hardness value is 51. 4-55. 7 HRC corresponding to the impact absorbed energy（ K） is 37. 7-18. 3 J. After high temperature pretreatment,the K of CADI is significantly improved and its hardness decrease with the increase of Tγ,the hardness of CADI decreases with the increase of TAand the K achieves the best when TA is260 ℃.
出处
《金属热处理》
CAS
CSCD
北大核心
2016年第4期161-164,共4页
Heat Treatment of Metals
关键词
高温预处理
含碳化物等温淬火球墨铸铁
硬度
韧性
high temperature pretreatment
carbidic austempered ductile iron（CADI）
hardness
toughness
