Failure Mechanism of Contact Fatigue of Surface Super-hardened M50NiL Steel
Hardness gradient, residual stress gradient and the organization structure of surface super-hardened M50NiL steel roller and M50 steel roller were studied, the rolling contact fatigue life was measured, and the failure process was analyzed and compared by using surface profiler, Vickers hardness tes...
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Journal of Aeronautical Materials
2017-12-01
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Online Access: | http://jam.biam.ac.cn/CN/Y2017/V37/I6/34 |
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doaj-4a1048e3d2c048c1b964e2c7411c52a32020-11-25T01:45:06ZzhoJournal of Aeronautical MaterialsJournal of Aeronautical Materials1005-50531005-50532017-12-01376344010.11868/j.issn.1005-5053.2017.000108201706000108Failure Mechanism of Contact Fatigue of Surface Super-hardened M50NiL SteelLUO Qinghong0ZHAO Zhenye1HE Ziqiang2LI Zhiming3AECC Beijing Institute of Aeronautical Materials, Beijing 100095, ChinaAECC Beijing Institute of Aeronautical Materials, Beijing 100095, ChinaAECC Beijing Institute of Aeronautical Materials, Beijing 100095, ChinaAECC Beijing Institute of Aeronautical Materials, Beijing 100095, ChinaHardness gradient, residual stress gradient and the organization structure of surface super-hardened M50NiL steel roller and M50 steel roller were studied, the rolling contact fatigue life was measured, and the failure process was analyzed and compared by using surface profiler, Vickers hardness tester, X ray residual stress determinator, optical microscope, scanning electron microscope (SEM), rolling contact fatigue test machine and other equipment. The fatigue failure mechanism of surface super-hardened M50NiL steel was revealed. The results show that the fatigue failure mechanism of surface super-hardened M50Nil steel returns to the Hertz theory and shows typical contact fatigue characteristics. The high surface hardness, residual compressive stress and a good organization structure can completely inhibit the initiation of surface cracks; therefore, the failure mechanism is returned to the Hertz theory.http://jam.biam.ac.cn/CN/Y2017/V37/I6/34surface super-hardenedM50NiL steelcontact fatiguefailure mechanism |
collection |
DOAJ |
language |
zho |
format |
Article |
sources |
DOAJ |
author |
LUO Qinghong ZHAO Zhenye HE Ziqiang LI Zhiming |
spellingShingle |
LUO Qinghong ZHAO Zhenye HE Ziqiang LI Zhiming Failure Mechanism of Contact Fatigue of Surface Super-hardened M50NiL Steel Journal of Aeronautical Materials surface super-hardened M50NiL steel contact fatigue failure mechanism |
author_facet |
LUO Qinghong ZHAO Zhenye HE Ziqiang LI Zhiming |
author_sort |
LUO Qinghong |
title |
Failure Mechanism of Contact Fatigue of Surface Super-hardened M50NiL Steel |
title_short |
Failure Mechanism of Contact Fatigue of Surface Super-hardened M50NiL Steel |
title_full |
Failure Mechanism of Contact Fatigue of Surface Super-hardened M50NiL Steel |
title_fullStr |
Failure Mechanism of Contact Fatigue of Surface Super-hardened M50NiL Steel |
title_full_unstemmed |
Failure Mechanism of Contact Fatigue of Surface Super-hardened M50NiL Steel |
title_sort |
failure mechanism of contact fatigue of surface super-hardened m50nil steel |
publisher |
Journal of Aeronautical Materials |
series |
Journal of Aeronautical Materials |
issn |
1005-5053 1005-5053 |
publishDate |
2017-12-01 |
description |
Hardness gradient, residual stress gradient and the organization structure of surface super-hardened M50NiL steel roller and M50 steel roller were studied, the rolling contact fatigue life was measured, and the failure process was analyzed and compared by using surface profiler, Vickers hardness tester, X ray residual stress determinator, optical microscope, scanning electron microscope (SEM), rolling contact fatigue test machine and other equipment. The fatigue failure mechanism of surface super-hardened M50NiL steel was revealed. The results show that the fatigue failure mechanism of surface super-hardened M50Nil steel returns to the Hertz theory and shows typical contact fatigue characteristics. The high surface hardness, residual compressive stress and a good organization structure can completely inhibit the initiation of surface cracks; therefore, the failure mechanism is returned to the Hertz theory. |
topic |
surface super-hardened M50NiL steel contact fatigue failure mechanism |
url |
http://jam.biam.ac.cn/CN/Y2017/V37/I6/34 |
work_keys_str_mv |
AT luoqinghong failuremechanismofcontactfatigueofsurfacesuperhardenedm50nilsteel AT zhaozhenye failuremechanismofcontactfatigueofsurfacesuperhardenedm50nilsteel AT heziqiang failuremechanismofcontactfatigueofsurfacesuperhardenedm50nilsteel AT lizhiming failuremechanismofcontactfatigueofsurfacesuperhardenedm50nilsteel |
_version_ |
1725025182005854208 |