Development of a computati onal tool for hardness prediction in heat treated aisi 1040 and 4140 steels

Authors

  • Facundo Quiñones Universidad Nacional de San Juan
  • Fernando D. Carazo Universidad Nacional de San Juan
  • Virginia H. Aranda Universidad Nacional de San Juan
  • Manuel Sánchez Universidad Nacional de San Juan

DOI:

https://doi.org/10.5944/ribim.22.1.42326

Keywords:

Steel, Thermo-metallurgical, Austenite, AISI 1040, AISI 4140

Abstract

This paper presents a thermo-me tallurgical model which can sim ulate diffusional and displacive transformations of austenite in AISI 1040 and 4140 steels coole d at different rates. Diffusive phase transfor- mations are simulated with Kirka ldy-Venugopalan model and Li et al. model. Martensitic transformation is simulated using Koistinen-Marburger formula. Metallurgical mode ls are engaged to a thermal model solved with a finite elements method. T emperature changes obtained wit h the numerical model are compared with measured cooling curves in thre e different points: 3.45 mm, 13.5 mm and 51 mm from the base of a Jominy specimen. Hardness numerical results are contrasted with: a) ha rdness profiles measured on Jominy specimens b) hardenability bands and c) a c ommercial software. The agreem ent between numerical results and experi- mental measurements highlight the prediction ability of Thermo- metallurgical modelling as well as its potential to be used as a forecasting tool in the heat treatment industry .

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Published

2018-04-01

How to Cite

Quiñones, F. ., Carazo, F. D., Aranda, V. H., & Sánchez, M. (2018). Development of a computati onal tool for hardness prediction in heat treated aisi 1040 and 4140 steels. Revista Iberoamericana de Ingeniería Mecánica, 22(1), 55–68. https://doi.org/10.5944/ribim.22.1.42326

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