Acceleration of the super bainite transformation through a coarse austenite grain size

作者：Hu F; Hodgson P D; Wu K M^*

来源：Materials Letters, 2014, 122: 240-243.

DOI：10.1016/j.matlet.2014.02.051

• Metals and alloys
• Microstructure
• Kinetics
• Austenite grain size
• Super bainite

The effect of austenite grain size on the kinetics of the isothermal bainitic transformation in a highcarbon super-bainitic steel was investigated. Experimental results showed that the transformation of super bainite was accelerated by a coarse austenite grain size. This is because while coarse austenite grains provide less nucleation sites, it is beneficial for bainite sheaf growth. Meanwhile, there is a critical austenite grain size below which there is a distinct grain size effect and above which it is not evident.

• 出版日期2014-5-1
• 单位武汉科技大学