Increase of fatigue strength and lifetime by deep rolling at elevated temperature of notched specimens made of steel SAE 4140-Reference-Cited by-同舟云学术

Increase of fatigue strength and lifetime by deep rolling at elevated temperature of notched specimens made of steel SAE 4140

Published:2011-12-01 Issue:6 Volume:66 Page:342-348
ISSN:2194-1831
Container-title:HTM Journal of Heat Treatment and Materials
language:en
Short-container-title:

Author:

Cherif A.,Hochbein H.¹,Zinn W.²,Scholtes B.²

Affiliation:

1. Dr.-Ing. Helmut Hochbein, Hegenscheidt-MFD GmbH & Co. KG, Erkelenz, Germany

2. Dr.-Ing. Wolfgang Zinn, Prof. Dr.-Ing. Bertold Scholtes, Institute of Materials Engineering, University of Kassel, Germany

Abstract

Abstract In comparison with traditional room temperature processes, deep rolling at elevated temperature leads to further increased fatigue strengths and lifetimes. This is demonstrated using notched bending fatigue samples made of quenched and tempered steel SAE 4140, which have been processed at room temperature and at 300 °C resp. near surface properties were analyzed before and after fatigue loading. It is shown that the positive effect of warm deep rolling is due to stabilized residual stress states which relax only slightly in the course of fatigue loading. The underlying microstructural processes are static as well as dynamic strain aging effects.

Publisher

Walter de Gruyter GmbH

Subject

Materials Chemistry,Metals and Alloys,Industrial and Manufacturing Engineering

Link

https://www.degruyter.com/document/doi/10.3139/105.110120/pdf

Reference15 articles.

1. Modern Mechanical Surface Treatment

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