The Mechanical Properties and Delayed Fracture Resistance of 15B22 Steel Treated by a High-requency Induction Heat Treatment
The mechanical properties and delayed fracture resistance of the quenched 15B22 steel tube have been investigated in this study. Subjecting to various induction heating processes followed by a sprayed water quenching, the 15B22 steel exhibited tensile strength up to 1600MPa～1760MPa and kept a good ductility. Its corresponding microstructure is composed of fully martensitic structure without retained or tempered carbides. An extremely fine prior austenite grain size ranging from 2.5 to 8μm was obtained from the fast induction heating process. The delayed fracture test showed that the quenched 15B22 steel possessed a good delayed fracture resistance in a dilute acid solution. The critical hydrogen content of the quenched 15B22 steel for the occurrence of delayed fracture, determined by the electrochemical hydrogen charged specimens under the constant load test of yield stress, is 3.7ppm.
door impact beam MnB steel delayed fracture high frequency induction heat treatment
Jui-Fan TU Yeong-Tsuen PAN Ching-Yuan HUANG
China Steel Product Development Section,Steel and Aluminum R &D,China Steel Corp.,Kaohsiung,Taiwan China Steel Product Development ection,Steel and Aluminum R &D,China Steel Corp.,Kaohsiung,Taiwan
国际会议
The Fourth Asian Conference on Heat Treatment and Surface Engineering(第四届亚洲热处理及表面工程大会)
北京
英文
74-79
2009-10-27（万方平台首次上网日期，不代表论文的发表时间）