Influence of the Manganese Content on the Hot Ductility Behavior of High Manganese Steels within the System Fe-Mn-C

摘要：

　　Hot ductility is a parameter to determine the susceptibility to hot cracking during bending and straightening in a continuous casting machine (CC).The class of fully austenitic high manganese TRIP and TWIP steels shows in comparison to ferritic steel grades lower ductility values between Tliq and 700℃.To identify the mechanisms for poor ductility,four steel grades with varying manganese contents were investigated,in an in situ hot tensile testing machine.A decrease of the hot ductility by increasing the manganese content is identifiable.Especially at 1000 ℃ where regularly the bending and straightening processof the strand begins,a strong dependency between the Mn content and ductility is present.The fracture surface is besides the manganese content mainly influenced by the testing temperature.

关键词： cooling rate strain rate hot ductility high manganese

作者: STEENKEN Bernhard LOPES REZENDE Joao Luiz SENK Dieter

作者单位: Department of Ferrous Metallurgy, RWTH Aachen University, Aachen 52072, Germany

会议类型: 国际会议

会议名称: the 1st International Conference on Automobile Steel & The 3rd International Conference on High Manganese Steels (第一届国际汽车用钢大会暨第三届高锰钢国际会议)

会议地点: 成都

会议语种:英文

页码: 260-262

在线出版日期: 2016-11-16（万方平台首次上网日期，不代表论文的发表时间）