微合金化钢中NbC在铁素体中的沉淀和沉淀强化

金属学报

1984, Vol. 20

Issue (1): 9-16

论文

本期目录 | 过刊浏览

微合金化钢中NbC在铁素体中的沉淀和沉淀强化

雍岐龙;郑鲁

冶金工业部钢铁研究总院;1978届研究生昆明工学院金属材料系;冶金工业部钢铁研究总院

PRECIPITATION OF NbC IN FERRITE AND ITS EFFECT ON PRECIPITATION-STRENGTHENING OF MICROALLOY STEELS

YONG Qilong; ZHENG Lu (Central Iron and Steer Research Institute; Ministry of MetaZlurgical Industry; Beijing) (Manuscript received 20 September; 1982; revised manuscript 4 June; 1983)

引用本文:

雍岐龙;郑鲁. 微合金化钢中NbC在铁素体中的沉淀和沉淀强化[J]. 金属学报, 1984, 20(1): 9-16.
, . PRECIPITATION OF NbC IN FERRITE AND ITS EFFECT ON PRECIPITATION-STRENGTHENING OF MICROALLOY STEELS[J]. Acta Metall Sin, 1984, 20(1): 9-16.

全文: PDF(1406 KB)

摘要: 对NbC在含Nb(0.24,0.15和0.08％)的三种微合金化钢的铁素体中的沉淀和沉淀强化作用进行了研究,利用已有理论估算了NbC在铁素体中沉淀的临界核心尺寸、均匀形核率、最大形核率温度,大约在600℃等温沉淀可得到最为有效的沉淀强化效果。此外,修正了NbC粒子沉淀强化屈服强度增量公式,试验结果与公式计算符合较好。结果指出,当NbC粒子尺寸小到2.6nm时,沉淀强化机制仍为Orowan绕越机制。

Abstract：The precipitation of NbC in ferrite and its effect on the precipitation-strengthening of the microalloy steels containing 3 different percentages of Nb, i.e. 0.24, 0.15 and 0.08％, have been studied. The critical NbC nucleus size, the rate of homogeneous nucleation, the temperature of the maximum rate of homogeneous nucleation and the time for complete precipitation were estimated in agreement between the calculated and experimental results. The precipitation-strengtheningseems to have optimum effect on the steels by isothermal precipitation for 1 h at about 600℃. Moreover, an improvement of the formula for the yield strength increment by the platelike NbC precipitates was also made. It is shown that, even the size of NbC precipitates down to 2.6nm, the mechanism of the precipitation-strengthening is still that of the Orowan's.

收稿日期: 1984-01-18

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1 Morrison, W.B.; Woodhead, J.H., J. Iron Steel Inst., 201 (1963) , 43．
2 Morrison, W.B., J. Iron Steel Inst., 201 (1963) , 317．
3 Gray, J.M.; Webster, D.; Woodhead, J.H., ibid., 203 (1965) , 812．
4 Bucher, J.H., Trans. Metall. Soc. AIME, 239 (1967) , 478．
5 Gray, J.M.; Yeo, R.B.G., Trans. ASM Q., 61(1968) , 255．
6 Pickering, F.B.; Gladman, T., J. Iron Steel Inst., Spec. Rep., № 81． 1967, p. 10．
7 Davenport, A.T.; Berry, F.G.; Honeycombe, R.W.K., Met. Sci., 2(1968) , 104．
8 Gray, J.M., Metall. Trans., 3 (1972) , 1495．
9 Batte, A.D.; Honeycombe, R. W. K., J. Iron Steel., Inst., 211 (1973) , 284．
10 A. B., MuTOM, (1973) , № 4, 19．
11 Ohmori, Y., Trans. Iron Steel Inst. Jpn, 15 (1975) , 194．
12 Cohen, M.; Owen, W.S., Microalloying 75, Proc. Int. Symp. High Strength Low Alloys steels, Union Carbide Corporation, New York, 1977, p. 2．
13 林栋梁,金属学报,14(1978) ,323．
14 Honeycombe, R.W.K., Scand. J. Met., 8(1979) , 21．
15 Irvine, K.J.; Picketing, F.B.; Gladman, T., J. Iron Steel Inst., 205 (1967) , 1651．
16 Nordbery, H.; Aronsson, B., ibid., 206 (1968) , 1263．
17 郑鲁;雍岐龙,碳化铌在微合金钢中的溶解,1981(待发表).
18 雍岐龙,研究生论文,冶金部钢铁研究总院,1981．
19 Pickering, F.B., Physical Metallurgy and the Design of Steel, Appl. Sci. Publ., London, 1978, p. 72．
20 Von Prnka, T., Arch. Eisenhuettenwes., 42(1971) , 919．
21 Smith, D. W.; Hehemann, R.F., J. Iron Steel Inst., 209 (1971) , 476．
22 Malik, L.; Lund, J.A, , Metall. Trans., 3 (1972) , 1403．

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