Ductile Fracture Prediction in Cross-Wedge Rolling of Rail Axles

In the process of cross-wedge rolling, axial-symmetric forgings are formed using wedge tools. These tools may be flat- or roll-shaped. This article presents two methods of cross-wedge rolling of rail axles, traditional and multi-wedge, as well as their advantages and disadvantages. Two cross-wedge r...

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Autor principal:	Tomasz Bulzak
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	rail axles cross-wedge rolling cracking Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/12dc1392fee34736901f311677ee7b65
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spelling	oai:doaj.org-article:12dc1392fee34736901f311677ee7b652021-11-11T18:09:49ZDuctile Fracture Prediction in Cross-Wedge Rolling of Rail Axles10.3390/ma142166381996-1944https://doaj.org/article/12dc1392fee34736901f311677ee7b652021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6638https://doaj.org/toc/1996-1944In the process of cross-wedge rolling, axial-symmetric forgings are formed using wedge tools. These tools may be flat- or roll-shaped. This article presents two methods of cross-wedge rolling of rail axles, traditional and multi-wedge, as well as their advantages and disadvantages. Two cross-wedge rolling processes are modelled numerically using Simufact Forming. Numerical results are then verified by experiments performed on a flat wedge rolling mill. Results obtained with the two rolling methods are compared in terms of material fracture, force parameters, effective strain and thermal conditions during rolling. Results show that material fracture poses a serious problem in these rolling processes. It is found that the Cockcroft–Latham ductile fracture criterion does not predict material fracture correctly. Results demonstrate that the fracture of railway axles in cross-wedge rolling can be best predicted by the fracture criteria developed by Ayada, Brozzo, Ko, Rice and Tracey.Tomasz BulzakMDPI AGarticlerail axlescross-wedge rollingcrackingTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6638, p 6638 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	rail axles cross-wedge rolling cracking Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	rail axles cross-wedge rolling cracking Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Tomasz Bulzak Ductile Fracture Prediction in Cross-Wedge Rolling of Rail Axles
description	In the process of cross-wedge rolling, axial-symmetric forgings are formed using wedge tools. These tools may be flat- or roll-shaped. This article presents two methods of cross-wedge rolling of rail axles, traditional and multi-wedge, as well as their advantages and disadvantages. Two cross-wedge rolling processes are modelled numerically using Simufact Forming. Numerical results are then verified by experiments performed on a flat wedge rolling mill. Results obtained with the two rolling methods are compared in terms of material fracture, force parameters, effective strain and thermal conditions during rolling. Results show that material fracture poses a serious problem in these rolling processes. It is found that the Cockcroft–Latham ductile fracture criterion does not predict material fracture correctly. Results demonstrate that the fracture of railway axles in cross-wedge rolling can be best predicted by the fracture criteria developed by Ayada, Brozzo, Ko, Rice and Tracey.
format	article
author	Tomasz Bulzak
author_facet	Tomasz Bulzak
author_sort	Tomasz Bulzak
title	Ductile Fracture Prediction in Cross-Wedge Rolling of Rail Axles
title_short	Ductile Fracture Prediction in Cross-Wedge Rolling of Rail Axles
title_full	Ductile Fracture Prediction in Cross-Wedge Rolling of Rail Axles
title_fullStr	Ductile Fracture Prediction in Cross-Wedge Rolling of Rail Axles
title_full_unstemmed	Ductile Fracture Prediction in Cross-Wedge Rolling of Rail Axles
title_sort	ductile fracture prediction in cross-wedge rolling of rail axles
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/12dc1392fee34736901f311677ee7b65
work_keys_str_mv	AT tomaszbulzak ductilefracturepredictionincrosswedgerollingofrailaxles
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Ductile Fracture Prediction in Cross-Wedge Rolling of Rail Axles

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