金属学报  1983, Vol. 19 Issue (1): 65-149

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30CrMnSiNi2A钢的断裂韧性与马氏体亚结构及其分解产物的关系

朱健;葛庆麟

中国科学院上海冶金研究所;中国科学院上海冶金研究所

RELATIONSHIP BETWEEN FRACTURE TOUGHNESS OF 30CrMnSiNi2A STEEL AND SUBSTRUCTURE OF MARTENSITE OR OTHER DECOMPOSED PRODUCTS

ZHU Jian; GE Qinglin (Shanghai Institute of Metallurgy; Academia Sinica)

朱健;葛庆麟. 30CrMnSiNi2A钢的断裂韧性与马氏体亚结构及其分解产物的关系[J]. 金属学报, 1983, 19(1): 65-149.
, . RELATIONSHIP BETWEEN FRACTURE TOUGHNESS OF 30CrMnSiNi2A STEEL AND SUBSTRUCTURE OF MARTENSITE OR OTHER DECOMPOSED PRODUCTS[J]. Acta Metall Sin, 1983, 19(1): 65-149.

摘要 参考文献 相关文章 Metrics 全文: PDF(2973 KB)   摘要: 本文应用电镜薄膜技术,观察30CrMnSiNi2A超高强度钢在淬火与回火过程中马氏体的精细结构,发现此钢淬火后存在位错型和孪晶型两类马氏体。低温回火的断裂韧性值,主要取决于马氏体的分解产物的性质和形态,而与挛晶马氏体是否存在无关。均匀分布的χ-Fe_2C的消失以及脆性的Fe_3C相的择优偏析,导致400℃退火钢的严重脆化。550℃回火后出现高温回火脆性,除了合金元素和合金碳化物在晶界富集外,晶内的微细沉淀相对滑动位错的钉扎,都对它的断裂韧性下降有贡献。回火温度进一步升高,沉淀相球化,基体回复,使断裂韧性再次上升。 Abstract：Fine structure of tempered martensite of ultra-high strength steel 30CrMnSiNi2A was investigated under TEM. It was found that two kinds of martensite, the twinned type and the dislocated type were existed in the quenched state. Fracture toughness of this steel tempered below 400℃ depends primarily on the species and morphology of the products of martensite decomposition and has little concerned with the presence of twinned martensite. The severe embrittlement at 400℃ temper is attributed to the elimination of the homogeneously distributed χ-Fe_2C with the simultaneous preferred precipitation of the brittle Fe_3C phase. The high temperature temper brittleness at 550℃ is induced by the solute segregation(as alloyed carbide)along grain boundary as well as dislocation pinning by fine precipitates. Upon further increase in tempering temperature however, the precipitate phases are more or less spheroidized which, together with the matrix recovery, cause the fracture toughness to increase. 收稿日期: 1983-01-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 朱健 葛庆麟 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1983/V19/I1/65 1 Parker, E. R.; Zackay, V. F., Eng. Fract. Mech., 7(1975) , 371． 2 Mcmahon, J. A.; Thomas, G., The Microstructure and Design of Alloys, Proc. 3rd Int. Conf. on the Strength of Metals and Alloys, Vol.1, Cambridge, England, 1973, p. 180． 3 Osborne, D. E.; Embury, J. D., Metall. Trans., 4(1973) , 2051． 4 Huang, Der-Hung; Thomas, G., ibid., 2(1971) , 1587． 5 Zackay, V. P.; Parker, E. R.; Wood, W. E., The Microstructure and Design of Alloys, Pro. 3rd Int. Conf. on the Strength of Metals and Alloys, Vol. 1, Cambridge, England, 1973, p.175． 6 Wood, W. E., Eng. Fract. Mech., 7(1975) , 219． 7 Lai, G. Y.; Wood, W. E.; Clark, R. A.; Zackay, V. F.; Parker, E.R., Metall. Trans., 5(1974) , 1663． 8 Curry, D. A.; Knott, J. F., Met. Sci., 13(1979) , 341． 9 Carr, E. L.; Bichler, D.; Connolly, A.; Dragen, R.; Faller, J.; Johari O.; Morais, R.; Parker, M. T.; Sailors, R. H., Applications of Electron Microfractography to Materials Research, Ed. Wiebo, W., ASTM STP, №493,(1971) , p. 36． 10 Hahn, G. T.; Kawninen, M. F.; Rosenfield, A. R., Annu, Rev. Mater. Sci., 2(1972) , 381． 11 Bradeshia, H. K. D. H.; Edmonds, D. V., Met. Sci., 13(1979) , 325． 12 Thomas, G., Iron Steel Int., 46(1973) , 451． 13 今井勇之进;小仓次夫;井上明久,铁钢,59(1973) ,261． 14 中国科学院上海冶金研究所断裂韧性组,1976年北京断裂力学交流会第二次会议文集,1976年,p.12． 15 Youngblood, J. L.; Raghavan, M., Metall. Trans., 8A(1977) , 1439． 16 曲哲;郭可信,金属学报16(1980) ,371． 17 雷廷权;唐之秀;苏梅;金属学报.18(1982) ,485． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed