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Yuebo Qu (2011)
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Li Jie, Wang Li, Li Zhi (2008)
Effect of Heat Treatment on Impact Fracture Surface of High Co-Ni Ultralight Strength SteelJ. Aeronaut. Mater., 28
K. Lu (1996)
Nanocrystalline metals crystallized from amorphous solids: nanocrystallization, structure, and propertiesMaterials Science & Engineering R-reports, 16
Kebing Zhang, Mei Zhang, Zhenghong Guo, N. Chen, Y. Rong (2011)
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G Qingfeng, Z Hong, W Hongyan (2002)
Laser Surface Hardening and Fatigue Resistance Ability Analysis of 40CrNiMoA GearAppl. Laser, 22
Xue Min-peng (2011)
Investigation on nitrogen distribution and corrosion resistance of 35CrMoA steel in laser quenching-nitridingTransactions of the China Welding Institution
Zhaoyun Chen, Guijuan Zhou, Z. Chen (2012)
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A. Meysami, R. Ghasemzadeh, S. Seyedein, M. Aboutalebi, R. Ebrahimi, M. Javidani (2009)
Physical simulation of hot deformation and microstructural evolution for 42CrMo4 steel prior to direct quenchingJournal of Iron and Steel Research International, 16
R. McDaniels, S. White, K. Liaw, L. Chen, M. Mccay, P. Liaw (2008)
Effects of a laser surface processing induced heat-affected zone on the fatigue behavior of AISI 4340 steelMaterials Science and Engineering A-structural Materials Properties Microstructure and Processing, 485
H. Bhadeshia (2002)
TRIP-Assisted Steels?Isij International, 42
Jia Meng-dong (2010)
Microstructure and properties of GCr15 steel treated by laser quenchingTransactions of Materials and Heat Treatment
Z. Wang, Xuefeng Liu, Jian-Xin Xie (2012)
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L. Jin (2003)
Study on the microstructure and property of CrMnMo anti-wear steel in the state of quenching and temperingJournal of China Coal Society
S. Chatterjee, H. Bhadeshia (2006)
TRIP-assisted steels: cracking of high-carbon martensiteMaterials Science and Technology, 22
The surface of 40CrNiMo steel was quenched with a CO2 laser, Charpy impact test was conducted at temperatures of 20, 0, and −20 °C, and the impact absorption energies were measured. The fracture morphologies were observed with SEM, and the influence of microhardness, residual stress, and retained austenite on mechanical behavior of impact fracture after laser quenching was discussed. The results show that the hardened layer depth is more than 1 mm after laser quenching, and hardness is about 480-500 HV. The fracture morphology of the sample is dimple rupture at a temperature of 20 °C; with the lower temperature the fracture dimples become smaller. At a temperature of −20 °C, the fracture morphologies change from ductile to brittle, which is mainly cleavage fracture. The increase in surface hardness, production of compressive residual stress, and existence of retained austenite after laser quenching are the main mechanisms of increasing impact toughness.
Journal of Materials Engineering and Performance – Springer Journals
Published: Jul 23, 2014
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