Exponential model of strength-hardness mechanical properties analysis and numerical prediction in hot stamping

Dai, M. H.; Ying, L.; Fan, Z. S.; Hu, P.; Shi, D. Y.; He, B.
May 2013
AIP Conference Proceedings;May2013, Vol. 1532 Issue 1, p1058
Academic Journal
Hot stamping is an advanced sheet forming technology integrating traditional forming and quenching technique for high strength and hardness simultaneously in the process. This paper has investigated the mechanical properties evolution history of hot stamping boron steel 22MnB5 with different cooling rates under non-isothermal quenching process. It has been conducted for analyzing the effect of divided stage cooling influences on the mechanical properties of 22MnB5 by the martensite transformation temperature point Ms. A series of tests were conducted using the divided stage cooling tool in order to acquire the cooling rates hardness, mechanical strength of different quenching process. The hardness-cooling rate exponential model and mechanical strength-hardness-cooling rate exponential model were established by using the dimensional analysis method and the inverse method based on numerical analysis software MATLAB. The model has been applied to the prediction simulation in the self-developed software KMAS_HF to validate the hardness and strength prediction in hot stamping. The typical U-shape hot stamping experiment was investigated for the numerical simulation of non-isothermal quenching process. The evaluation result shows that the model has a good reliability and applicability for predicting the hot stamping mechanical properties, which can be used to guide the optimization of hot stamping process and the design of hot stamping tools.


Related Articles

  • Numerical prediction of microstructure and mechanical properties for the S-rail with tailored properties. Lu, Shouzhao; Liu, Lizhong; Hu, Ping; Shen, Guozhe; Gao, Junzhe; Huo, Xiaobo // AIP Conference Proceedings;May2013, Vol. 1532 Issue 1, p912 

    Hot stamped parts are applied widely to reduce the weight and meet safety requirements for new vehicles. It has been noticed, however, that hot stamped parts of fully martensitic transformation lead to a low elongation of about 5%. Hot stamped parts may be enhanced by locally tailoring their...

  • Ductile damage prediction in metal forming processes: Advanced modeling and numerical simulation. Saanouni, K. // AIP Conference Proceedings;May2013, Vol. 1532 Issue 1, p30 

    This paper describes the needs required in modern virtual metal forming including both sheet and bulk metal forming of mechanical components. These concern the advanced modeling of thermo-mechanical behavior including the multiphysical phenomena and their interaction or strong coupling, as well...

  • Framework for springback compensation based on mechanical factor evaluation. Oya, Tetsuo; Naoyuki Doke, Naoyuki // AIP Conference Proceedings;May2013, Vol. 1532 Issue 1, p239 

    Springback is an inevitable phenomenon in sheet metal forming, and many researches on its prediction and compensation method have been presented. The use of high-strength steels is now popular; therefore, the demand for effective springback compensation system is increasing. In this study, a...

  • Effect of mechanical properties on wrinkling limit diagrams for Aluminum 5086 alloy annealed at different temperature. Narayanasamy, R.; Satheesh, J.; Loganathan, C. // Journal of Materials Science;Jan2008, Vol. 43 Issue 1, p43 

    This article deals with the wrinkling limit diagrams for Aluminium 5086 alloy sheets having thickness of 2.00 mm annealed at three different temperatures namely 200, 250 and 300 °C. The study pertains to deep drawing into cylindrical cups through conical die using a flat bottom punch. When a...

  • Investigation of the Phase Formation of AlSi-Coatings for Hot Stamping of Boron Alloyed Steel. Veit, R.; Hofmann, H.; Kolleck, R.; Sikora, S. // AIP Conference Proceedings;1/17/2011, Vol. 1315 Issue 1, p769 

    Hot stamping of boron alloyed steel is gaining more and more importance for the production of high strength automotive body parts. Within hot stamping of quenchenable steels the blank is heated up to austenitization temperature, transferred to the tool, formed rapidly and quenched in the cooled...

  • Hardness Property of Resistance-Heated and Rapidly Cooled Steel Sheet for Die-Quenching Use. Maki, Seijiro // AIP Conference Proceedings;1/17/2011, Vol. 1315 Issue 1, p309 

    The performance of die quenching using resistance heating was experimentally investigated using a practical die-quenching steel sheet. Test pieces cut from the sheet were resistance-heated and die-quenched. The heating rate and heating temperature were varied, as was the release temperature from...

  • Surface Integrity of Shot Peened Aluminium Alloy 7075-T651. Zupanc, Uro�; Grum, Janez // Strojniski Vestnik / Journal of Mechanical Engineering;May2011, Vol. 57 Issue 5, p379 

    The objective of the present study was to investigate the effect of surface hardening by shot- peening (SP) on fatigue properties of high-strength aluminium alloy 7075-T651. The paper describes the effects of SP treatment by presenting analyses of surface roughness measurement, microhardness...

  • Hardenability of steels and alloys as a factor of reducing the metal intensity of industrial structures. Chechin, É. // Strength of Materials;May2012, Vol. 44 Issue 3, p306 

    The energy method of calculating the strength of steels and alloys is proposed to be used on the basis of the complex of their mechanical properties. The analytical mechanism provides the differentiated approach to determining the safety factors of materials, which in its turn offers the...

  • Mechanical Properties of Aluminum Matrix Composite Reinforced by Carbothermally Reduced of Fly Ash. Jamasri; Wildan, M. W.; Sulardjaka; Kusnanto // AIP Conference Proceedings;1/17/2011, Vol. 1315 Issue 1, p81 

    The addition of fly ash into aluminum as reinforcement can potentially reduce the production cost and density of aluminum. However, mechanical properties of aluminum matrix composite reinforced by fly ash (MMC ALFA) have some limitations due to the characteristic of fly ash. In this study, a...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics