Determination of stress-strain curve of dual phase steel by nanoindentation technique

被引：2
作者：
Punyamueang, Suttirat [1 ]
Uthaisangsuk, Vitoon [1 ]
机构：
[1] Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi, 126 Pracha Uthit Road, Bang Mod, Thung Khru, Bangkok
来源：
Key Engineering Materials | 2015年 / 658卷
关键词：
Dual phase steel; Nanoindentation test; Stress-strain curve;
D O I：
10.4028/www.scientific.net/KEM.658.195
中图分类号：
学科分类号：
摘要：
The advanced high strength (AHS) steels, for example, dual phase (DP) steels, transformation induced plasticity (TRIP) steels and complex (CP) steels principally exhibit multiphase microstructure features. Thus, mechanical behavior of the constituent phases significantly affects the resulting overall properties of such AHS steels. Novel material characterization techniques on micro- and nano-scale have become greatly more important. In this work, stress-strain response of the DP steel grade 1000 was determined by using the Nanoindentation testing. The DP steel showed the microstructure containing finely distributed martensite islands of about 50% phase fraction in the ferritic matrix. The nano-hardness measurements were firstly performed on each individual phase of the examined steel. In parallel, finite element (FE) simulations of the corresponding nano-indentation tests were carried out. Flow curves of the single ferritic and martensitic phases were defined according to a dislocation based theory. Afterwards, the load and penetration depth curves resulted from the experiments and simulations were compared. By this manner, the proper stress-strain responses of both phases were identified and verified. Finally, the effective stress-strain curve of the investigated DP steel could be determined by using 2D representative volume element (RVE) model. © (2015) Trans Tech Publications, Switzerland.
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页码：195 / 201
页数：6
相关论文
共 8 条
  • [1] Pierman A.P., Bouaziz O., Pardoen T., Jacques P.J., Brassart L., The influence of microstructure and composition on the plastic behaviour of dual-phase steels, Acta Materialia, 73, pp. 298-311, (2014)
  • [2] Lichinchi M., Lenardi C., Haupt J., Vitali R., Simulation of Berkovich nanoindentation experiments on thin films using finite element method, Thin Solid Films, 312, pp. 240-248, (1998)
  • [3] Baltazar V.H., Panda S.K., Kuntz M.L., Zhou Y., Nanoindentation and microstructure analysis of resistance spot welded dual phase steel, Mater. Letters, 64, pp. 207-210, (2010)
  • [4] Taylor M.D., Choi K.S., Sun X., Matlock D.K., Packard C.E., Xu L., Barlat F., Correlations between Nanoindentation Hardness and Macroscopic Mechanical Properties in DP980 Steel
  • [5] Rodriguez R.M., Gutierrez I., Unified formulation to predict the tensile curves of steels with different microstructures, Mater. Sci. Forum, 426-432, pp. 4525-4530, (2003)
  • [6] Sirinakorn T., Wongwises S., Uthaisangsuk V., A study of local deformation and damage of dual phase steel, Mater. Design, 64, pp. 729-742, (2014)
  • [7] Lemaitre J., Chaboche J.L., Mechanics of Solid Materials, (1990)
  • [8] Seok M.Y., Kim Y.J., Choi I.C., Zhao Y., Jang J.I., Predicting flow curves of two-phase steels from spherical nanoindentation data of constituent phases: Isostrain method vs. Non-isostrain method, Int. J. Plast, 59, pp. 108-118, (2014)
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