Acta Metall Sin  1987, Vol. 23 Issue (1): 26-32    DOI:

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MICROSTRUCTURE AND STRENGTH OF ALLOY GH37 AFTER LASER RADIATING SURFACE FUSION-SOLIDIFICATION

MENG Qinglin ZHU Guizeng DU Xiangzhu JIANG Xiaoping (Northeast Institute of Technology.Shenyang);SUN Tongkun (Institute of Mechanics.Academia Sinica.Beijing);LIU Chengxin

MENG Qinglin ZHU Guizeng DU Xiangzhu JIANG Xiaoping (Northeast Institute of Technology.Shenyang);SUN Tongkun (Institute of Mechanics.Academia Sinica.Beijing);LIU Chengxin. MICROSTRUCTURE AND STRENGTH OF ALLOY GH37 AFTER LASER RADIATING SURFACE FUSION-SOLIDIFICATION. Acta Metall Sin, 1987, 23(1): 26-32.

Abstract References Related Articles Recommended Metrics Download:  PDF(2327KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Study was made of the microstructure of alloy GH37 subjected continuously to CO_2 laser beam and followed with various heat treatments.The influence of laser radiating local fusion-solidification and subsequent heat treatment on its microhardness over heat-affected zone,rotating bending fatigue at 700℃ as well as tensile and rupture strength at 800℃ has been discussed.For such alloy GH37 after fusion-solodification,a further treatment to readjust the microstructure of the heat-affected zone is essential for properly precipitating the γ'-phase in car- bide along grain boundary,possibly reducing the element segregation in dendrite over fusion zone and eliminating the thermal residual stress,etc.,hence,its high temperature mechanical properties,e.g.,rupture,tensile and fatigue strength, would be done to satisfaction.The suitable regime of heat treatment may be: preheating and laser radiating+1050℃,4h,A.C.+800℃,16h,A.C. Received:  18 January 1987      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/Y1987/V23/I1/26 1 Elemings M C,关玉龙等译.凝固过程,北京:冶金工业出版社,1981,60 2 Jones H,Some Principles of Solidification at High Cooling Rates,In:Rapid Solidification Processing Principles and Technologies,Proceedings of the International Conference on Rapid Solidification Processing.Nov.13-16,1977,Reston,Virginia,USA:Baton Rouge Claitor's Publ,28-29/ No related articles found! No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed