Abstract
The paper presents the results of residual stresses modelling and experimental stress measurements after quenching of AISI 4140 heat-treatment steel specimens. In the research, cylindrical specimens of ? 40 ? 160 mm in size were used whereas in modelling specimens of the same diameter, i.e., ? 40 mm, but of infinite length were employed. One quenching agent was selected, i.e., a 15% polymer water solution. The influence of residual stresses due to martensitic transformation and temperature differences was investigated with different initial specimen temperatures above and under TAC1. Two different temperatures were chosen in order to reveal the nature and quantitative properties of temperature- and transformational-induced residual stresses. Analytical work was made by mathematical modelling of heat treatment which supposes that the rheological model of a continuum is thermo-elasto-plastic material. Austenitic-martensitic transformations are described with Koistinen-Marburger equation. Related experimental measurements revealed relatively high temperature- and transformational-induced residual stresses, which were obtained with the hole drilling relaxation method.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
