Acta Metall Sin  1998, Vol. 34 Issue (10): 1049-1054    DOI:

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EFFECT OF COLD ROLLING ON THE KINETICS OF δ PHASE PRECIPITATION IN INCONEL 718

LIU Wenchang; CHEN Zonglin; XIAO Furen; YAO Mei; WANG Shaogang;LIU Runguang(College of Material Engineering; Yanshan University; Qinhuangdao 066004);(Shenyang Liming Engine Manufacturing Company; Shenyang 110043);(School of Materials Engineering; Harbin Institute of Technology; Harbin 150001)Correspondent:LIU Wenchang;associate professor; Tel: (0335)8057047

LIU Wenchang; CHEN Zonglin; XIAO Furen; YAO Mei; WANG Shaogang;LIU Runguang(College of Material Engineering; Yanshan University; Qinhuangdao 066004);(Shenyang Liming Engine Manufacturing Company; Shenyang 110043);(School of Materials Engineering; Harbin Institute of Technology; Harbin 150001)Correspondent:LIU Wenchang;associate professor; Tel: (0335)8057047. EFFECT OF COLD ROLLING ON THE KINETICS OF δ PHASE PRECIPITATION IN INCONEL 718. Acta Metall Sin, 1998, 34(10): 1049-1054.

Abstract References Related Articles Recommended Metrics Download:  PDF(465KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The mass percentages of δ phase in Inconel 718 cold rolled to different reductionsand then treated at different temperatures for different times were measured by X-ray diffraction,and the effect of cold rolling on the kinetics of δ phase precipitation was investigated. Therelationship between the mass percentage of δ phase and annealing time follows the Avramiequation. At 960℃, cold rolling has a little effect on the time exponent (n) and the rate constantof δ phase (α). Below 910 ℃, as cold rolling reduction and annealing temperature increases, theValue of n decreases, whereas the value of or increases. The relationship between the rate constantof δ phase and temperature follows Arrhenius equation. As cold roiling reduction increases,the apparent activation energy of δ precipitation decreases. Cold rolling promotes the γ" → δtransformation. According to the kinetics of δ precipitation, the precipitation-temperature-time(PTT) curves of δphase were given.It has been found that the C curve shifts left as cold rolling reduction increases. Key words:  Inconel 718      cold rolling      δphase      precipitation kinetics      Received:  18 October 1998      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/Y1998/V34/I10/1049 1 Desvallees Y, Bouzidi M, Bois F, Beaude N. In: Loria E A ed., Superallous 718, 706 and Various Derivatives,Warrendale, PA: TMS, 1994: 281 2 Pieraggi B, Uginet J F. In: Loria E A ed., Supenalloys 718, 625, 706 and Various Derivatives, Warrendale,PA: TMS, 1994: 535 3 Kirman I, Warrington D H. Metoll Trans, 1970; 1: 2667 4 Sundararaman M, Mukhopadhya P, Banerjee S. Metall Trans, 1988; 19A: 453 5 Dong J X, Xie X S, Xu Z C, Zhang S H. 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