Impact of Tempering Temperature on Fracture Toughness of High Tenacious Steel(GDL��1)
LING Min1,ZHU Mao��lan2,LIANG Yi��long3
1.Tongren College of Technology, Tongren 554300,Guizhou,China; 2.College of Applied Sciences, Jiangxi University of Technology, Ganzhou 341000,Jiangxi,China; 3.School of Material Science and Metallurgical Engineering, Guizhou Key Laboratory for Mechanical Behavior and Microstructure of Materials, Guizhou University,Guiyang 550003,Guizhou,China
Abstract��The fracture toughness of new tiny deformation steel(GDL��1) are studied at seven different heat treatment temperatures.The results show that in air��cooled state the fracture toughness, impact toughness is higher than that in oil quenching state, The amount of residual austenite after air cooling is greater than the one after oil cooling.The toughness of steel and the stability of residual austenite are improved, by means of tempering at 250~300 �� followed by ari��cooling,resulting in good fracture toughness.
����;��ï��;������. �ػ��¶ȶ�GDL��1��ǿ���²��϶������Ե�Ӱ��[J]. �й������ڿ���, 2009, 27(4): 1-0.
LING Min;ZHU Mao��lan;LIANG Yi��long. Impact of Tempering Temperature on Fracture Toughness of High Tenacious Steel(GDL��1). Chinese Journal of Iron and Steel, 2009, 27(4): 1-0.
2009, Vol. 27 
