摘要
利用膨胀法并配合光学及电子显微分析，较为系统地研究了６０Ｓｉ２Ｍｎ钢在连续加热条件下的相变规律及特点；测定了与其相应的奥氏体形成图。结果表明，钢中珠光体向奥氏体的转变是在一个温度区间内完成的，该区间随加热速度的增加，逐渐变宽并移向高温区；钢中粒状合金渗碳体。在Ａ＿（Ｃ３）温度以上开始大量溶解，且在更高的温度才趋于消失，因此，在非平衡加热条件下，于Ａ＿（Ｃ３）温度以上奥氏体可与Ｍ＿３Ｃ颗粒在较宽温度区间内共存。
The heating transformation rules and characteristics of 60Si2Mn steel have been studied by using the thermal expansion method cooperated with metallographical and electron microscopy analysis. An austenite formation diagram has been determined. The result shows that:the p→A transformation occurs in a wider temperature region which begins at AC1b and ends at AC1e.The higher the heating speed,the wider the region will be and the region moves towards to higher temperature;the spheroidal alloy M3C particles begin to dissolve at the temperature Tcb which is above AC3 and disappears when temperature is above Tce;in condition of non equilibrium heating,the austenite can exist with M3C particles in a wider region above temperature AC3.
出处
《材料科学与工艺》
CAS
CSCD
北大核心
1994年第3期55-60,共6页
Materials Science and Technology
关键词
加热
奥氏体形成图
相变
硅锰钢
Continuous heating
Austenitic formation diagram
Transformation
