金属学报  1988, Vol. 24 Issue (1): 114-118

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Fe—Nb—C系中γ/γ+NbC_x的相边界

洪彦若

北京钢铁学院研究生院;教授

STUDY ON γ/γ+NbC_x PHASE BOUNDARY IN Fe-Nb-C SYSTEM

HONG Yanruo(Y.R.Hong);Professor;Gruduate School; Beijing University of Iron and Steel Technology

洪彦若. Fe—Nb—C系中γ/γ+NbC_x的相边界[J]. 金属学报, 1988, 24(1): 114-118.
. STUDY ON γ/γ+NbC_x PHASE BOUNDARY IN Fe-Nb-C SYSTEM[J]. Acta Metall Sin, 1988, 24(1): 114-118.

摘要 参考文献 相关文章 Metrics 全文: PDF(397 KB)   摘要: <正> Nb是高强低合金钢的一个重要的微合金化元素。它与C,N及其它化合物在奥氏体中溶解度的大小,都直接影响钢的性能。了解γ/γ±NbC_x的平衡相边界,即溶度积〔Nb〕〔C〕~x很有必要,但目前已知的一批溶度积数据分歧很大,例如, 关键词 ： Fe-Nb-C系,  NbC_x,  非化学计量化合物,  相边界     Abstract：The thermodynamic properties of nonstoichoimetric niobium mono-carbide (NbC_x) have been investigated by a, galvanic cell technique using calciastabilized zirconia(CSZ) and yttria stabilized zirconia(YSZ) solid electrolytes. EMFmeasurements were made in the temperature range 1100--1360K for compositionsvarying from NbC_(0.72) to NbC_(0.98) and activity relationships and partial molar freeenthalpies for Nb and C and integral molar free enthalpies for NbC_x have beencalculated from the results. The Fe-Nb-C system was assumed to be a regular solutionand the equation for evaluating γ/γ+NbC_x phase boundary in the Fe-Nb-C systemwas evaluated by using the integral molar free enthalpy of NbC_x determined bythis work lnN_(Nb)-N_(Nb)[13990+29390x-29390(1+x)N_c]/T+xlnN_c+ +[(1+x)6995N_(Nb)~2]/T-5284x/T+(13900+A)/T-B/8.314- -N_c[29390-10570x+5284(1+x)N_c]/T=0 When substituted 0.98, 0.945, 0.91 and 0.87 for x in the equation, the calcu-lated results were in excellent agreement with the results determined by Meyer, Chris-tensen, Nordberg, Johanson and SHENG Lizhen, Mori, respectively. The cause ofthe differences amony former data was also shown in present paper. Key words： Fe-Nb-C system    NbC_x    nonstoichiometric compound    phase boundray 收稿日期: 1988-01-18      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 洪彦若 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1988/V24/I1/114 1 Meyer L. Dissertation Claustthal Berg, Hottn, 1966 2 Christensen N, Johansen T H. Progress Report Submitted to the Royal Norwegian Council For Scientific and Industrial Research, Jan 31, 1966 3 Nordberg H, Aronsson B. J Iron Steel, Inst, London, 1968; 206: 1236 4 Johansen T H, Christensen N, Augland B. Trans AIME, 1967; 239: 1651 5 盛利贞,时実正治,山口(纟厶),角南英八郎,中嶋由行。铁钢,1968;54:763 6 Huber E J Jr., Head E L, Holley C E Jr., et al., J Phys Chem, 1961; 65: 1846 7 Elliott J F, Rodney P. Trans ASM, 1961; 53: 13 8 Smith A, Mass W. Z Anorg Chem, 1894; 7: 96 9 Brauer G, Renner H, Wernet J. Z Anorg Chem, 1954; 277: 249 10 Honeycombe R W K. Scand J Metall, 1979; 8: 21 11 Harvig H. Jernkontorets Ann, 1971; 155: 157 12 #12 13 #12 14 Robinson D, Argent B B. J Mater Sci, 1975; 10: 217 15 Argent B B, Wakeman D W. N P L Symposium No9 On Intermetallic Compounds, 1958; (1) : 3 16 Hudd R C, Jones A, Kale M N. J Iron Steel Inst, London, 1971; 209: 121 17 #12 18 #12 19 Laskhamanan V K. M Eng Thesis, McMaster University, Ontario, Canada, 197 [1] 徐桂英;李建保;谢志鹏;黄勇. NbC_x晶须的制备[J]. 金属学报, 1998, 34(2): 205-210. Viewed Full text Abstract Cited   Shared      Discussed