High temperature constitutive model of q345B steel

Autor:	Pei, W. C., Wu, W. Q., Hu, Y., Ji, H. C.
Jazyk:	angličtina
Rok vydání:	2022
Předmět:	Q345B thermal compression test stress-stain curves temperature constitutive mode
Zdroj:	Metalurgija Volume 61 Issue 3-4
ISSN:	1334-2576 0543-5846
Popis:	In order to accurately predict the flow stress of Q345B steel at high temperature, the Q345B steel was subjected to a hot compression test on the Gleeble-1500D thermal simulation test machine at a deformation temperature of 1 173,15~1 373,15 K and a strain rate of 0,01~10 s-1. Through the obtained true stress-strain curve, strain factors are introduced into the Arrhenius equation to establish a more accurate strain-coupled constitutive model. The results show that the correlation coefficient of the Arrhenius model considering strain compensation is 0,993, and the average absolute error is 4,59 %, which can accurately predict the flow stress. The experimental data and the calculated prediction curve fit well, which verifies the feasibility of the model.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=od_______951::e50dc04fd263eab12f684862a1e6aeee https://hrcak.srce.hr/file/396886 Zobrazit plný text záznamu Plný text ve formátu PDF