金属学报  1986, Vol. 22 Issue (6): 13-21

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奥氏体热作工具钢的晶粒粗化行为及合金元素的作用

谢长生;何向山;崔(山昆)

华中工学院;华中工学院;华中工学院

GRAIN COARSENING BEHAVIOUR TOWARDS AUSTENITIC HOT WORK TOOL STEELS AND EFFECT OF ALLOYING ELEMENTS

by XIE Changsheng; HE Xiangshan; CUI Kun (Huazhong University of Science and Technology; Wuhan)

谢长生;何向山;崔(山昆). 奥氏体热作工具钢的晶粒粗化行为及合金元素的作用[J]. 金属学报, 1986, 22(6): 13-21.
, , . GRAIN COARSENING BEHAVIOUR TOWARDS AUSTENITIC HOT WORK TOOL STEELS AND EFFECT OF ALLOYING ELEMENTS[J]. Acta Metall Sin, 1986, 22(6): 13-21.

摘要 参考文献 相关文章 Metrics 全文: PDF(939 KB)   摘要: 本文用定量金相法分析和讨论了奥氏体热作工具钢的晶粒粗化行为.结果表明,在钢中加入Nb可提高MC的稳定性,增加MC的体积分数.Nj/Mn比对晶粒粗化也有较大的影响,随Ni/Mn比的增加,钢中M_(23)C_6和MC质点的体积分数增加。两者均提高晶粒粗化温度。 比较了已有的晶粒粗化模型,在晶界面为凸凹不平的曲面前提下,对Gladman模型做了修正,提出了如下的修正Gladman公式: R_0=πr/3f_v(3/2-2/Z) 该公式能较好地预测晶粒的实际尺寸。 Abstract：The grain coarsening behaviour towards the austenitic hot work tool steels has been studied by means of quantitative metallography. The stability of MC is improved and its volume fraction in the steel is increased by alloying element Nb added. The ratio of Ni/Mn substantially affects the grain coarsening. The volume fraction of M_23C_6 and MC carbides in the steel increases with the increase of the Ni/Mn ratio. Both Nb added and Ni/Mn ratio increased raise thegrain coarsening temperature. The modification of the Gladman's model may then be proposed by the comparison of different models of grain coarsening with assumption of uneven in convexo-concave interface along grains. The modified Gladman's expression is given as: R_o =πr/3f_v(3/-2/Z) that may fairly predict the actual grain size observed. 收稿日期: 1986-06-18      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 谢长生 何向山 崔(山昆) 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1986/V22/I6/13 1 Smith, C.S., Trans. Metall. Soc. AIME, 175(1948) , 15． 2 Koul, A. K.; Pickering, F, B., Acta Metall., 30(1982) , 1303． 3 Gladman, T., Proc. R. Soc. London, A294(1966) , 298． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed