Numerical Investigation on Laser Transformation Hardening with Different Temporal Pulse Shapes

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	Numerical Investigation on Laser Transformation Hardening with Different Temporal Pulse Shapes
	Wu W(吴炜); Liang NG(梁乃刚); Gan CH(甘翠华)
刊名	Surface & Coatings Technology
	2006
通讯作者邮箱	wuwei@lnm.imech.ac.cn
卷号	200 期号:8 页码:2686-2694
ISSN号	0257-8972
通讯作者	Wu, W (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, 15 Beishuanxi Rd, Beijing 100080, Peoples R China.
中文摘要	A 3-D numerical model for pulsed laser transformation hardening (LTH) is developed using the finite element method. In this model, laser spatial and temporal intensity distribution, temperature-dependent thermophysical properties of material, and multi-phase transformations are considered. The influence of laser temporal pulse shape on connectivity of hardened zone, maximum surface temperature of material and hardening depth is numerically investigated at different pulse energy levels. Results indicate that these hardening parameters are strongly dependent on the temporal pulse shape. For the rectangular temporal pulse shape, the temperature field obtained from this model is in excellent agreement with analytical solution, and the predicted hardening depth is favorably compared with experimental one. It should be pointed out that appropriate temporal pulse shape should be selected according to pulse energy level in order to achieve desirable hardening quality under certain laser spatial intensity distribution.
学科主题	力学
类目[WOS]	Materials Science, Coatings & Films ; Physics, Applied
研究领域[WOS]	Materials Science ; Physics
关键词[WOS]	AUSTENITE-PEARLITE TRANSFORMATION ; EUTECTOID CARBON-STEEL ; THERMAL-ANALYSIS ; SURFACE
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000235202100013
公开日期	2007-06-15 ; 2007-12-05 ; 2009-06-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/17155]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Wu W,Liang NG,Gan CH. Numerical Investigation on Laser Transformation Hardening with Different Temporal Pulse Shapes[J]. Surface & Coatings Technology,2006,200(8):2686-2694.
APA	吴炜,梁乃刚,&甘翠华.(2006).Numerical Investigation on Laser Transformation Hardening with Different Temporal Pulse Shapes.Surface & Coatings Technology,200(8),2686-2694.
MLA	吴炜,et al."Numerical Investigation on Laser Transformation Hardening with Different Temporal Pulse Shapes".Surface & Coatings Technology 200.8(2006):2686-2694.