Acta Metall Sin  1997, Vol. 33 Issue (9): 995-1001    DOI:

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HEAT-AFFECTED ZONE LIQUATION AND LIQUATION CRACKING IN GH150 ALLOY WELDMENTS

YING Huiyun;SHI Chengen;HAO Chuanyong;YU Erjing (Institute of Metal Research;Chinese Academy of Sciences; Shenyang 110015); QIN Xudong;ZHANG Qi (National Liming Machine Corporation; Shenyang 110043)

YING Huiyun;SHI Chengen;HAO Chuanyong;YU Erjing (Institute of Metal Research;Chinese Academy of Sciences; Shenyang 110015); QIN Xudong;ZHANG Qi (National Liming Machine Corporation; Shenyang 110043). HEAT-AFFECTED ZONE LIQUATION AND LIQUATION CRACKING IN GH150 ALLOY WELDMENTS. Acta Metall Sin, 1997, 33(9): 995-1001.

Abstract References Related Articles Recommended Metrics Download:  PDF(1361KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Mechanisms of heat affected zone (HAZ) liquation and liquation cracking in GH150 alloy were investigated by using varestraint test and hot ductility test in conjunction with the differential thermal analysis (DTA) and optical, scanning electron microsopy. On heating, γ/ (Nb,Ti)C liquation take places in the HAZ above 1250℃. When the temperature reaches 1353- 1375℃, a large amount of liquid particles due to initial melting can be observed within the grains near the fusion boundary. On cooling, γ/(Nb,Ti)C eutectic and γ/ Laves phase eutectic take place at 1273 and 1200℃ respectively. The constitutional liquation of (Nb, Ti)C particles on heating and γ/ Laves phase eutectic reaction on cooling are the main metallurgical factors responsible for the HAZ liquation cracking in GH 150 alloy. Key words:  constitutional liquation      liquaion cracking      γ/ (Nb      Ti)C eutectic      γ/ Laves phase eutectic.      Received:  18 September 1997      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/Y1997/V33/I9/995 1Knorovsky G A Cieslak M J,Headley T J,Roming A D,Hamm W F Jr.Metall Trans,1989;20A:2149 2Pepe J J ,Savage W F Weld J,1967;46:411 3Thompsom K G,Genculu S.Weld J,1983;62:337 [1] Kejian LI,Zhipeng CAI,Yifei LI,Jiluan PAN. EVOLUTION BEHAVIOR OF LAVES PHASE IN FB2 MARTENSITIC STAINLESS STEEL DURING WELDING[J]. 金属学报, 2016, 52(6): 641-648. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed