Laser Surface Hardening Using Determined Intensity Distribution

[3] [3] Cui Chunyang, Yu Gang, Wang Lixin et al..Properties of ductile iron modified by laser surface hardening with optical changing of laser beam[J]. Heat Treatment of Metals, 2006, 31(10): 31～33

[4] [4] Wen Zongyin, Feng Shuqiang, Li Baoling et al.. Application of laser transformation hardening for CrMo cast iron automobile moulds[J]. Heat Treatment of Metals, 2007, 32(1): 40～42

[5] [5] I.D.Pantelis, E.Bouyiouri, N.Kouloumbi. Wear and corrosion resistance of laser surface hardened structural steel[J]. Surface and Coatings Technology, 2002, 298: 125～134

[6] [6] Zhuang Qiren, Zhang Wenzhen, Lü Fengping. Study of the laser heat treatment for mould surface[J]. Chinese J. Lasers, 2002, A29(3): 271～276

[7] [7] Wen Zongyin, Feng Shuqiang, Li Baoling et al..Big automobile over-laying pieces’ deep-drawing mold strengthened by laser surface treatment[J]. Applied Laser, 2006, 26(4): 230～232.

[8] [8] G.Tani, L.Orazi, A.Fortunato et al..Prediction of hypo eutectoid steel softening due to tempering phenomena in laser surface hardening[J].CIRP Annals-Manufacturing Technology,2008, 57(1):209～212

[9] [9] M.K.H.Leung, H.C.Man, J.K.Yu. Theoretical and experimental studies on laser transformation hardening of steel by customized beam[J]. Int. J. Heat. Mass. Tran.,2007, 50: 4600～4606

[10] [10] Jin Guofan, Yan Yingbai, Wu Minxian et al.. Binary Optics [M]. Beijing: National Defence Industry Press, 1998. 55～64

[11] [11] Ido Gur, David Mendlovic. Diffraction limited domain flat-top generator [J]. Opt. Commun., 1998, 145: 237～248

[12] [12] Yajun Li. New expressions for flat-topped light beams [J]. Opt. Commun., 2002, 206: 225～234

[13] [13] P.Hariharan, Andal Narayanan. Modified pinhole spatial filter producing a clean flat-topped beam [J]. Optics & Laser Technology, 2004, 36: 151～153

[14] [14] Zhang Yan, Zhang Jingjuan, Situ Guohai. Investigation on diffractive optical elements for converting Gaussian beam into square uniform focused spot [J]. Chinese J. Lasers, 2004, 31(10): 1183～1187

[15] [15] Dong Meifeng, Song Xinxiang, Li Shen. The designation and experiment of the DOE which applied to shaping the laser beam to square frame shape [J]. Laser Technology, 2005, 29(2): 169～171

[16] [16] Song Hongwei, Yu Gang, Alexander F.H. Kaplan et al.. Thermal fatigue on pistons induced by shaped high power laser. Part II Design of spatial intensity distribution via numerical simulation [J]. International Journal of Heat and Mass Transfer, 2008, 51: 768～778

[17] [17] A.Basu, J.Chakraborty, S.M.Shariff et al.. Laser surface hardening of austempered (bainitic) ball bearing steel [J]. Scipta Materialia, 2007, 56: 887～890

[18] [18] Marc Heidkamp, Olaf Kessler, Franz Hoffmann et al.. Laser beam surface hardening of CVD TiN-coated steels [J]. Surface and Coatings Technology, 2004, 188-189: 294～298

[19] [19] Yao Jianhua, Fu Jibin, Chen Jun. Laser beam mode analysis in laser quenching process[J]. Applied Laser,2008, 28(1): 25～29

[20] [20] Wu Gang, Chen Bingsen. Effects of laser scanning parameters on the uniformity of hardened case distribution [J]. Transactions of Materials and Heat Treatment, 2003, 24(3): 84～87

[21] [21] He Fang, Wu Gang, Song Guangming. Study on laser hardening with curved rectangular beam[J]. Journal of Tianjin Polytechnic University, 2003, 22(5): 17～20

[22] [22] Li Shaoxia, Yu Gang, Zheng Caiyun et al.. High-power laser beam shaping by inseparable two-dimensional binary-phase gratings for surface modification of stamping dies[J]. Optics and Lasers in Engineering, 2008,46: 508～513

[23] [23] Y. Chen, C. H. Gan, L. X. Wang et al.. Laser surface modified ductile iron by pulsed Nd-YAG laser beam with two-dimensional array distribution[J]. Applied Suface Science, 2005, 245: 316～321

[24] [24] Ba Fahai, Gan Cuihua, Wu Wei et al.. Study of surface modification by pulse laser of ductile iron[J]. Chinese J. Lasers, 2003, 30(7): 663～667

[25] [25] Ba Fahai, Yan Guoqiang, Wu Wei et al.. Microhardness distribution of ductile iron modified by laser with space array[J]. Chinese J. Lasers, 2005, 32(2): 287～291

[26] [26] Dang Gang, Yu Gang. Intensity distribution design of two-dimensional spot-array for pulsed laser transformation hardening[J]. Chinese J. Lasers, 2008, 35(2): 287～290

[27] [27] Song Hongwei, Li Shaoxia, Yu Gang. Intensity distribution design for laser-induced thermal loading based on numerical simulation[J]. Chinese J. Lasers, 2006, 33(6):842～845

[28] [28] G. R. B. E. Rrner, J. Meijer. Inverse calculation of power density for laser durface treatment[J]. Annals of the CIRP, 2000, 49(1):135～138