A hardness prediction model considering grain size effect for ferrite steel

被引：0

作者：

Sun, Wenbo ^{[1
]}

Jin, Junsong ^{[1
]}

Wang, Xin-Yun ^{[1
]}

机构：

[1] State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology, Wuhan City

来源：

International Journal of Microstructure and Materials Properties | 2015年 / 10卷 / 3-4期

基金：

中国国家自然科学基金;

关键词：

Cold forging; Effective strain; Grain size effect; Hardness prediction model; Vickers hardness;

D O I：

10.1504/IJMMP.2015.072920

中图分类号：

学科分类号：

摘要：

Hardness is frequently used as an index to evaluate the mechanical properties of manufactured parts. Prediction of hardness distribution is beneficial to the optimisation of process parameters. For polycrystalline materials, the grain size has significant influence on hardness. In this paper, a hardness prediction model for ferrite steel was established by taking the grain size effect into consideration. The influence of grain size and effective strain on the hardness evolution during cold forming processes was investigated based on both experiments and simulations. The results proved that initial hardness, hardness coefficient and hardening exponent are all significantly affected by the grain size, i.e., they all decrease with the increase in grain size. The model proposed was validated to be capable of predicting the hardness distribution in cold forgings with different initial grain sizes. © 2015 Inderscience Enterprises Ltd.

引用

页码：259 / 273

页数：14

共 15 条

[1] Branch N.A., Subhash G., Arakere N.K., Klecka M.A., Material-dependent representative plastic strain for the prediction of indentation hardness, Acta Materialia, 58, pp. 6487-6494, (2010)
[2] Cox M.R., Budhu M., A practical approach to grain shape quantification, Engineering Geology, 96, 1-2, pp. 1-16, (2008)
[3] Gouveia B.P.P.A., Rodrigues J.M.C., Martins P.A.F., Finite element modelling of cold forward extrusion using updated Lagrangian and combined Eulerian-Lagrangian formulations, Journal of Materials Processing Technology, 80, pp. 647-652, (1998)
[4] Hall E.O., The deformation and ageing of mild steel: III discussion of results, Proceedings of the Physical Society, 64, pp. 747-753, (1951)
[5] Hansen N., Hall-Petch relation and boundary strengthening, Scripta Materialia, 51, pp. 801-806, (2004)
[6] Kim H., Lee S., Altan T., Prediction of hardness distribution in cold backward extruded cups, Journal of Materials Processing Technology, 59, pp. 113-121, (1996)
[7] Morrison W.B., The effect of grain size on the stress-stain relationship in low-carbon steel, Trans. ASM, 59, pp. 824-846, (1966)
[8] Petruska J., Janicek L., On the evaluation of strain inhomogeneity by hardness measurement of formed products, Journal of Materials Processing Technology, 143-144, pp. 300-305, (2003)
[9] Qiu H., Wang L.N., Hanamura T., Torizuka S., Prediction of the work-hardening exponent for ultrafine-grained steels, Materials Science and Engineering: A, 536, pp. 269-272, (2012)
[10] Ruminski M., Luksza J., Kusiak J., Panko M., Analysis of the effect of die shape on the distribution of mechanical properties and strain field in the tube sinking process, Journal of Materials Processing Technology, pp. 683-689, (1998)

← 1 2 →