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| 1 | CALCULATION OF 3-D TRANSIENT TEMPERATURE FIELD DURING LASER TRANSFORMATION HARDENING PROCESS显示文摘A three-dimensional transient heat transfer model for laser transformation hardening process has been developed in this paper. The finite size of the laser treated sample, the surface heat loss of the sample, the latent heat of phase transformation and the temperature dependence of thermal properties of materials were considered. The heat source was considered as a moving Gaussian heat flux with a constant velocity. Three-dimension unequally spatial grid explicit finite difference equations, alternating direction implicit finite difference equations and implicit finite difference equations were deduced respectively. Three programs to calculate the temperature field were developed using Fortran language. The transient temperature fields of C22, 42CrMo, C60 steel samples during laser transformation hardening process were calculated using these programs, and the widths and depths of laser transformation hardening zones were also predicted. C22, 42CrMo, C60 steel samples were treated by CO2 laser,the widths and depths of laser transformation hardening zones of these samples were also measured experimentally. The calculated widths and depths of laser transformation hardening zones are in good agreement with the experimental results. | L. W Zhang, R.S. Wang, J. Th.M.De Hosson, Y.L. Xia and F. G. Wang 1) The State Key Lab. for Materials Modification by Laser, Ion and Electron Beams, Dalian University of Technology, Dalian 116023, China 2) Department of Applied Physics, University of Gro | 2000 | Acta Metallurgica Sinica(English Letters)2000，13，2： | 4 |
| 2 | Calculation of Temperature Field During Laser Transformation Hardening of Cylindrical Bodies显示文摘A Two-dimensional transient heat transfer model for laser transformation hardening process of cylindrical bodies has been developed. The surface heat loss of the sample, the latent heat of phase transformation, and the temperature dependence of thermal properties of material were considered. The laser heat source was considered as a moving Gaussian heat flux with a constant velocity. Finite element method was used to calculate the transient temperature field. A program to calculate the temperature field was developed using FORTRAN language. The transient temperature field, the width and depth of laser transformation hardening zone of 42CrMo steel sample during laser transformation hardening process was calculated. The widths and depths of laser transformation hardening zones of 42CrMo steel samples were also measured experimentally. The calculated widths and depths of laser transformation hardening zones are in good agreement with the experimental results. | Liwen Zhang, Lixia Wei Guoliang Zhang, J. Th.MDe Hosson Yuanliang Xia , Fugang Wang 1.The State Key Laboratory for Materials Modification by Laser, Ion and Electron Beams 2.Material Engineering Department of Dalian University of Technology, Dalian 11 60 | 2000 | Journal of Shanghai Jiaotong university(Science)2000，5，1： | 3 |
| 3 | Oxidation-induced crack healing in Ti 3 AlC 2 ceramics显示文摘 | G.M. Song Y.T. Pei W.G. Sloof S.B. Li J.Th.M. De Hosson S. van der Zwaag | 2007 | Scripta Materialia2007，，1： | 2 |
| 4 | The evolution of microstructure in a laser clad TiB-Ti composite coating 显示文摘 | KOOI B J PEI Y T DE HOSSON J Th M | 2003 | Acta Mater2003，51，2： | 2 |
| 5 | In-situ strain observation in high power laser cladding 显示文摘 | Ocelik V Bosgra J Hosson D | 2009 | Surface & Coatings Technology2009，203，： | 1 |
| 6 | Phylegenetic variation in the silicon composition of plants 显示文摘 | HOSSON M J WHITE P J MEAD A | 2005 | Ann Bot2005，96，： | 1 |
| 7 | Functionally Graded Materials Produced by Laser Cladding显示文摘 | Y T pei J TH M DE hosson | 2000 | Functionally Graded Materials2000，，48： | 1 |
| 8 | Residual stress analysis in Co-based laser clad layers by laboratory X-rays and synchrotron diffraction techniques 显示文摘 | U De Oliveira V Ocelik J Th M De Hosson | 2006 | Surface & Coatings Technology2006，201，34： | 1 |
| 9 | Magnetic microstructure of YFell Ti aggregates 显示文摘 | Nunes D Colaco R de Hosson JTM Gonclves A P Pereira L C J Carvalho P A | 2009 | Journal of Alloys and Compounds2009，487，12： | 1 |
| 10 | Investigation on the formation of tungsten carbide in tungsten-containing diamond like carbon coatings显示文摘 | Strondl C Carvalho N M Hosson J Th M De | 2003 | Surface and Coatings Technology2003，162，23： | 1 |
| 11 | The Evolution of Microstrncture in a Laser Clad TiB-Ti Composite Coating 显示文摘 | KOOI B J PEI Y T DE HOSSON J T M | 2003 | Acta Materialia2003，51，： | 1 |
| 12 | Deposition and character- ization of hydrogenated diamond-like carbon thin films on rub- ber seals显示文摘 | Pei Y T Bui X L de Hosson J T M | 2010 | Thin Solid Films2010，518，21： | 1 |
| 13 | Reactive wetting of liquid metals on ceramic substrates 显示文摘 | Zhou X B De Hosson J Th M | 1996 | Acta Materials1996，44，2： | 1 |
| 14 | Functionally graded materials produced by laser cladding 显示文摘 | Pei Y T De Hosson J T M | 2000 | Acta Mater2000，48，： | 1 |
| 15 | Plasticity in metallic systems: Intrinsic versus extrinsic 显示文摘 | Greer J R De Hosson J M | 2011 | ProgMaterSci2011，56，： | 1 |
| 16 | Evaluating the use of national capital with the ecological footprint:Applications in Sweden and Subregions显示文摘 | Wackernagel M Lewan L Hosson C B | | 0，，： | 1 |
| 17 | Adhesion improvement of hydrogenated diamond-like carbon thin films by pre-deposition plasma treatment of rubber substrate显示文摘 | Bui X.L Pei Y.T Mulder E.D.G De Hosson J.Th.M | | 0，，14： | 1 |
| 18 | Ti-6A1-4V strengthened by laser melt injection of WCp particles显示文摘 | Vreeling J A Ocelik V Hosson De | 2002 | Acta Materialia2002，50，19： | 1 |
| 19 | Functionally graded materials produced by laser cladding显示文摘 | PEI Y T de HOSSON TH M | 2000 | Acta Mater2000，48，： | 1 |
| 20 | Orientation imagingmicroscopic observations of in situ deformed ultra lowcarbon steel 显示文摘 | Balke P De Hosson J T M | 2001 | Scripta materialia2001，44，3： | 1 |
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