轴承
軸承
축승
BEARING
2015年
8期
41-43
,共3页
GCr15 钢%深冷处理%微观组织%残余奥氏体%相对耐磨性
GCr15 鋼%深冷處理%微觀組織%殘餘奧氏體%相對耐磨性
GCr15 강%심랭처리%미관조직%잔여오씨체%상대내마성
steel GCr15%deep cryogenic treatment%microstructure%retained austenite%relative wear resistance
对 GCr15轴承钢进行了不同时间的深冷处理，对其微观组织形貌和力学性能进行了表征。结果表明：随着深冷处理时间的延长，残余奥氏体含量大幅下降，马氏体晶界上有亚微米级碳化物颗粒析出，提高了轴承钢的强度和耐磨性；硬度呈小幅上升趋势，冲击功有所下降。
對 GCr15軸承鋼進行瞭不同時間的深冷處理，對其微觀組織形貌和力學性能進行瞭錶徵。結果錶明：隨著深冷處理時間的延長，殘餘奧氏體含量大幅下降，馬氏體晶界上有亞微米級碳化物顆粒析齣，提高瞭軸承鋼的彊度和耐磨性；硬度呈小幅上升趨勢，遲擊功有所下降。
대 GCr15축승강진행료불동시간적심랭처리，대기미관조직형모화역학성능진행료표정。결과표명：수착심랭처리시간적연장，잔여오씨체함량대폭하강，마씨체정계상유아미미급탄화물과립석출，제고료축승강적강도화내마성；경도정소폭상승추세，충격공유소하강。
The deep cryogenic treatment is carried out for bearing steel GCr15 under different time,and the microstruc-tures and mechanical properties are characterized.The results show that the content of retained austenite greatly decrea-ses with the increase of time of deep cryogenic treatment,and some submicron scale carbides precipitate along bounda-ries of martensite laths,which may raise strength and wear resistance of bearing steel.Meanwhile,the hardness increa-ses no obviously,and the impact value decrease a little.
