Acta Metall Sin  1993, Vol. 29 Issue (3): 30-34    DOI:

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EFFECT OF LASER SCANNING SPEED ON PHASE CONSTITUTION AND WEAR RESISTANCE OF LASERCLADDING STELLITE HARD FACING ALLOY

XU Yourong;ZHANG Henghua;CHEN Daming;XIE Fuchun;XU Mingyu;CHEN Lanying;SU Baorong;QIAN Hongbin Shanghai University of Science and Technology Shanghai Optics and Fine Mechinery Research Institute; Academia Sinica professor;Department of Materials Science and Engineering;Shanghai University of Science and Technology; Shanghai 201800

XU Yourong;ZHANG Henghua;CHEN Daming;XIE Fuchun;XU Mingyu;CHEN Lanying;SU Baorong;QIAN Hongbin Shanghai University of Science and Technology Shanghai Optics and Fine Mechinery Research Institute; Academia Sinica professor;Department of Materials Science and Engineering;Shanghai University of Science and Technology; Shanghai 201800. EFFECT OF LASER SCANNING SPEED ON PHASE CONSTITUTION AND WEAR RESISTANCE OF LASERCLADDING STELLITE HARD FACING ALLOY. Acta Metall Sin, 1993, 29(3): 30-34.

Abstract References Related Articles Recommended Metrics Download:  PDF(573KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Effect of laser scanning speed on phase constitution, microstructure,microhardness and wear resistance of laser-cladding stellite hard facing alloy by using of across-flow-stype CO_2 laser of power 1. 5 kW has been investigated. The laser-cladding layeron the alloy consists of matrix phase of over-saturation solid solution γ(Co, Cr) and complexhexagonal carbide M_7C_3. Under certain condition, with fast laser scanning speed, the oversaturation solubility of elements increases in γ(Co, Cr), and the precipitation of the complexcarbide M_7C_3 decreases, so that the microhardness increases and the wear resistance de-creases. But at slower laser scanning speed, more complex carbide M_7C_3 may precipitate, andthe wear resistance may be improved. Therefore, it is believed that the principal factor in im-provement over wear resistance is the precipitation of carbide M_7C_3, while overmicrohardness is the over-saturation solubility of elements in matrix phase (Co, Cr). Key words:  laser-cladding      Stellite hard facing alloy      phase constitution      wear resistance      Received:  18 March 1993      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1993/V29/I3/30 1 Atamert S, Bhadeshia H K D H. Metall. Trans, 1989: 20A: 1037 2 Sizoaz S, Mazumder J. Metall Trans, 1989: 20A: 2267, 2489 3 Glordan L. Proceeding 3rd Int. Cong. on Heat Treatment of Materials, 1983; 9--22--9--26 4 Kesel T. H, Fiore N F. J Mater for Energy Syst, 1981; 3: 7 5 Gnanamuthu D S. Applications of Lasers in Materials Processing. Metals Park. 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[14] LI Fengzhao;GU Yingni;JIANG Jiang;AO Qing;SUN Dongsheng (College of Materials Science and Engineering; Shandong University of Technology; Jinan 250061). MULTI-COMPONENT MICRO-ALLOYED AIR COOLING BAINITIC STEELS[J]. 金属学报, 1997, 33(5): 492-498. [15] WU Ping; ZHOU Changzhi; TANG Xi'nan (Tsinghua Univereity; Beijing)(Manuscript received 11 April;1994). PREPARATION OF WEAR-RESISTANT GRADED METAL-CERAMIC COATING BY LASER-ALLOYING[J]. 金属学报, 1994, 30(23): 508-512. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed