Effect of quench and temper on hardness and wear of HRP steel (armor steel candidate)

Authors

  • Yurianto Yurianto Brawijaya University Jl. Mayjen Haryono, 167, Malang, Indonesia, 65145, Indonesia https://orcid.org/0000-0002-3403-2233
  • Pratikto Pratikto Brawijaya University Jl. Mayjen Haryono, 167, Malang, Indonesia, 65145, Indonesia
  • Rudy Soenoko Brawijaya University Jl. Mayjen Haryono, 167, Malang, Indonesia, 65145, Indonesia https://orcid.org/0000-0002-0537-4189
  • Wahyono Suprapto Brawijaya University Jl. Mayjen Haryono, 167, Malang, Indonesia, 65145, Indonesia

DOI:

https://doi.org/10.15587/1729-4061.2019.156799

Keywords:

crack, ductility, hardness, holding, martensite, quench, strength, temper, toughness, wear

Abstract

The need for quenched and tempered steel increased, especially for the manufacture of the combat vehicle components. This steel is classified as high-strength and hardness and is bullet-resistant steel (armor steel). Maintaining the stability of steel hardness is very important because the quality standard for armor steel is hardness. High hardness causes brittleness increase, and tempers are needed to reduce it (residual stress is relieved by temper). Austenite temperature and temper affect steel hardness and wear resistance of quenched and tempered steel. To obtain hardness and wear due to the influence of quench and temper on hot rolled plate steel as the armor steel candidate. The material used in this research is hot rolled plate steel made in Indonesia with a carbon content of 0.29 %. The method used is heating the material to 900 °C, 885 °C and 870 °C (held for 45, 30 and 15 minutes) and cooling in water and quenched steel is produced. Quenched steel is heated to 150 °C (held for 45, 30 and 15 minutes) and cooled in atmospheric air. Optimum heat treatment parameters, the Taguchi and ANOVA methods were used. From the parameters and level of heat treatment chosen, the number of specimens needed can be known. The parameter of heat treatment has a strong influence on hardness, and ANOVA can obtain wear. Optimum hardness and wear are 566.48 HVN (±532 BHN) and 2.01×10−9 mm2/kg, respectively. Both are influenced by austenite and temper temperature.

Supporting Agency

  • The author would like to thank Pradika Andarisa (Mechanical Engineer) for his technical assistance. This assistance in the preparation of the calculation optimation using Minitab 18 in this article is gratefully acknowledged

Author Biographies

Yurianto Yurianto, Brawijaya University Jl. Mayjen Haryono, 167, Malang, Indonesia, 65145

Master of Technical Sciences, Associate Professor

Department of Mechanical Engineering

Pratikto Pratikto, Brawijaya University Jl. Mayjen Haryono, 167, Malang, Indonesia, 65145

Doctor of Technical Sciences, Professor

Department of Mechanical Engineering

Rudy Soenoko, Brawijaya University Jl. Mayjen Haryono, 167, Malang, Indonesia, 65145

Doctor of Technical Sciences, Professor

Department of Mechanical Engineering

Wahyono Suprapto, Brawijaya University Jl. Mayjen Haryono, 167, Malang, Indonesia, 65145

Doctor of Technical Sciences, Professor

Department of Mechanical Engineering

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Published

2019-05-24

How to Cite

Yurianto, Y., Pratikto, P., Soenoko, R., & Suprapto, W. (2019). Effect of quench and temper on hardness and wear of HRP steel (armor steel candidate). Eastern-European Journal of Enterprise Technologies, 3(12 (99), 55–61. https://doi.org/10.15587/1729-4061.2019.156799

Issue

Vol. 3 No. 12 (99) (2019): Materials Science

Section

Materials Science

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