Acta Metall Sin  1981, Vol. 17 Issue (1): 1-114    DOI:

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GRAIN BOUNDARY EMBRITTLEMENT BY μ AND σ PHASES IN IRON-BASE SUPERALLOYS

Chen Guoliang; Xie Xishan; Ni Kequan; Xu Zhichao; Wang Di (Beijing Institute of Iron and Steel Technology); Zhang Ming (Shanghai Institute of Iron and Steel Research); and Ju Yuying (Shanghai No. 5 Steel Works)

Chen Guoliang; Xie Xishan; Ni Kequan; Xu Zhichao; Wang Di (Beijing Institute of Iron and Steel Technology); Zhang Ming (Shanghai Institute of Iron and Steel Research); and Ju Yuying (Shanghai No. 5 Steel Works). GRAIN BOUNDARY EMBRITTLEMENT BY μ AND σ PHASES IN IRON-BASE SUPERALLOYS. Acta Metall Sin, 1981, 17(1): 1-114.

Abstract References Related Articles Recommended Metrics Download:  PDF(2144KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Grain boundary embrittlement by μ and σ phases was studied in 15Cr-25Ni and 15Cr-40Ni type iron-base superalloys. The embrittlement of iron-base superalloys can be sensitive to small amounts of μ and σ phases present at the grain boundaries, even when the weight fraction is between 0.01 and 1%. The degree of embrittlement was found to be directly proportional to the concentration coefficients of the μ and σ phases at the grain boundaries. The embrittlement effect results in intergranular fracture during impact testing. Fracture mechanisms caused by the μ and σ phases were quite different. This embrittlement effect was suppressed by reducing the grain size or by decreasing or removing the grain boundary embrittling μ and σ phases by controlling the chemical composition of the alloys. Received:  18 January 1981      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/Y1981/V17/I1/1 [1] Sullivan, C. P. and Donachie, M. J., Jr., Metals Eng. Quart.,11(1971) , № 4, 1． [2] Decker, R.F. and Floreen, S., Precipitation from Iron-Base Alloys, Eds. G. R. Speich and J. B. ClarK,Gordon and Breach, New York, 1965, p. 69． [3] Sims, C. T., J. Metals, 18 (1966) , 1119． [4] Sabol, G, P, and Stickler, R., Phys. Status Solidi, 35 (1969) , 11． [5] Sims, C. T., The Superalloys, Eds. C. T. Sims and W. C. Hagel, John Wiley & Sons, New York 1972, p. 259． [6] Sullivan, C. P. and Donachie, M. J., Jr., Metals Eng. Quart., 7 (1967) ,№ 1, 36． [7] Mihalisin, J. R., Bieber, C. G. and Grant, R. T., Trans. AIME, 242 (1968) , 2399． [8] 陈淦生、姚常春、仲增墉,金属学报,14(1978) ,284． [9] Beattie, H. J., Jr., and Hagel, W. C., Trans. AIME, 221 (1961) , 28． [10] Maniar, G. N., Muzyka, D. R. and Whitney, C. R., Trans. AIME, 245 (1969) , 701． [11] Wood, J. R., Proe. 3rd Int'l Symp. on Superalloys, Seven Springs, Pa. 1976, p. 227． [12] 北京钢铁学院高温合金研究组,金属学报,14(1978) ,440． [13] 上海钢铁研究所,北京钢铁学院,15Cr-40Ni型铁基高温合金的研究报告,1978． No related articles found! No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed