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Characterization of double strain-hardening behavior using a new flow of extremum curvature strain of Voce strain-hardening model

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Abstract

The traditional flow models with an emphasis on Voce family flow models are criticized using a typical monotonic strain-hardening material and a double strain-hardening (DSH) material. The DSH behavior is quantitatively expressed in detail using SUS304. They are, however, negatively evaluated especially for the DSH material that simultaneously experiences wide ranges of strain (e.g., during cold forging). After characterizing the Voce strain-hardening model (VSHM) with an emphasis on not only asymptotic stress but also a new concept of extremum curvature strain (ECS), the Voce-Ludwik model coupled with ECS is presented to describe the DSH flow behavior, based on the mathematical characteristics of VSHM. It has been found that the proposed Voce-Ludwik model can reflect DSH behavior using the nature of the strain at the ECS, which has the distinct advantage of modeling thermoviscoplastic flow behaviors of the DSH materials including stainless steels, copper alloys, aluminum alloys, etc.

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Acknowledgments

This work was partly supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) (20214 000000 520, Human Resource Development Project in Circular Re-manufacturing Industry) and Korea Evaluation Institute of Industrial Technology (KEIT) (20003950, Development and application of die fatigue fracture prediction system for intelligent and smart precision cold forming.) grant funded by the Korea government (MOTIE).

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Authors and Affiliations

  1. Engineering Research Institute, School of Mechanical and Aerospace Engineering, Gyeongsang National University, Jinju, 52828, Republic of Korea

    JongBok Byun

  2. Technical Research Laboratories, POSCO, Jeollanam, Gwangyang, 57807, Republic of Korea

    ChangWoon Jee

  3. Daedong Co., Ltd., 47-59, Dongbuk-ro 1109 beon-gil, Sangdong-myeon, Gimhae-si, Gimhae, 50803, Republic of Korea

    IlDong Seo

  4. ReCAFT, School of Mechanical and Aerospace Engineering, Gyeongsang National University, Jinju, 52828, Republic of Korea

    ManSoo Joun

Authors
  1. JongBok Byun
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Correspondence to ManSoo Joun.

Additional information

Jong Bok Byun is a training researcher of Engineering Research Institute, Gyeongsang National University, Jinju, Republic of Korea. He studied mechanical engineering in Department of Mechanical Engineering of Gyeongsang National University for his M. S. degree. His major research interest is the material modeling, finite element simulation of metal forming processes and their process optimal design.

Chang Woon Jee is a senior researcher of Technical Research Laboratories, POSCO, Gwangyang, Republic of Korea. He received his M.S. degree from the Department of Mechanical Engineering of KAIST. His research interests include characterization of material properties and engineering of continuous steel processing lines such as continuous galvanizing lines and continuous annealing lines for automotive steels.

Il Dong Seo is a technical advisor of Daedong Co., Ltd., Gimhae, Republic of Korea. He received his M.S. degree from the Department of Mechanical Engineering of KAIST. His interests lie in application of high-strength materials to automobiles and development of novel mechanical structures using metal-formed parts and their economical manufacturing.

Man Soo Joun is a Professor of School of Mechanical and Aerospace Engineering of Gyeongsang National University, Jinju, Republic of Korea. He received his Ph.D. from the Department of Mechanical Engineering of POSTECH. His major interests include metal forming simulation technologies with an emphasis on their industrial applications, specifically including flow analysis, heat transfer analysis, metallurgical analysis, process modelling and design optimization, and flow and metallurgical modellings.

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Byun, J., Jee, C., Seo, I. et al. Characterization of double strain-hardening behavior using a new flow of extremum curvature strain of Voce strain-hardening model. J Mech Sci Technol 36, 4115–4126 (2022). https://doi.org/10.1007/s12206-022-0730-5

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  • DOI: https://doi.org/10.1007/s12206-022-0730-5

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