Influence of Cu and Sn on Hot Ductility of Steels with Various C Content
Influence of Cu and Sn on Hot Ductility of Steels with Various C Content
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DOI：
10.2355/isijinternational.37.255
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发表时间：
1997-03
影响因子：
1.8
通讯作者：
H. Matsuoka;K. Osawa;Ono Moriaki;Masanori Ohmura
中科院分区：
文献类型：
--
作者：
H. Matsuoka;K. Osawa;Ono Moriaki;Masanori Ohmura
研究了Cu和Sn对C含量为0.002 ~ 0.15mass %的钢在10 - 3s-1应变速率下的热塑性的影响。在A3以下的奥氏体+铁素体两相区，即800 ~ 900 ℃，热塑性下降。随着C含量的增加，合金的热塑性进一步恶化，Cu和Sn的共同加入使合金的热塑性进一步恶化。分析认为，Cu、Sn轴承钢奥氏体+铁素体两相区的变质是以下因素综合作用的结果：（1）先共析铁素体沿奥氏体晶界沿着形成，（2）Sn在先共析铁素体与奥氏体的界面或奥氏体晶界处偏析，奥氏体与先共析铁素体变形强度之差增大。
The influence of Cu and Sn on the hot ductility at the strain rate of 10 -3 s -1 for steels with C contents from 0.002 to 0.1 5 mass% was investigated. The hot ductility dropped at austenite + ferrite two phase region just below A 3 , namely, 800 to 900°C. The hot ductility deteriorated more at higher C content, and furthermore with the co-addition of Cu and/or Sn. It was considered that the deterioration at austenite+ferrite two phase region in the Cu, Sn bearing steel was caused by the combined effect of following factors: (1) the formation of proeutectoid ferrite along the austenite grain boundaries, (2) the segregation of Sn at the interface between proeutectoid ferrite and austenite or at the austenite grain boundaries, and (3) the increase in the difference of the deformation strength between austenite and proeutectoid ferrite.