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Surface Severe Plastically Deformed Nanostructured AA7075 Alloy: Assessment on Tribological and Axial Fatigue Behaviors

Autor: Okan Unal, Erfan Maleki, Fazil Husem, Ibrahim Karademir, Yusuf Efe

Publikováno v: JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE

AA7075 alloy is exposed to severe shot peening (SSP) with an Almen intensity of 20A. The microstructure is analyzed via FEGSEM and EBSD microscopy. X-ray diffraction (XRD) analysis is used to evaluate the crystallite size in terms of FWHM measurement

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a9ccda7eee61e50a548e1715ad6e944
https://doi.org/10.1007/s11665-020-04892-w

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The formation of gradient nanostructured medium carbon steel via mild, moderate, and severe ultrasonic nanocrystal surface modification options: Assessment on wear and friction performance

Autor: Okan Unal, Erfan Maleki, Ibrahim Karademir, Fazil Husem, Yusuf Efe, Turan Das

Publikováno v: MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5dd6b928017aa9564078ff3d9a4ca60f
http://hdl.handle.net/11772/9246

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Effects of conventional shot peening, severe shot peening, re-shot peening and precised grinding operations on fatigue performance of AISI 1050 railway axle steel

Autor: Okan Unal, Yusuf Efe, Fazil Husem, Erfan Maleki, Ibrahim Karademir, Turan Das

Publikováno v: INTERNATIONAL JOURNAL OF FATIGUE

In this study, effects of conventional shot peening, severe shot peening, re-shot peening and precised grinding were performed to AISI 1050. By two-stage operations (SSP + RSP), residual stress depth and the magnitude on the surface were quite high.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46bb020f4adde1ef54c6b3b887a85fa2
http://hdl.handle.net/11772/9451

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Influence of aging on mechanical properties, wear and residual stress of a Heusler Al-Cu-Fe alloy

Autor: Muhammet Emre Turan, Fatma Meydaneri Tezel, Fazil Husem

Publikováno v: Materials Testing. 61:56-60

In this study, the ferromagnetic Heusler alloy Al-Cu-Fe was aged at a temperature of 300 °C for 0.5 h, 1 h, 1.5 h, 2 h and 2.5 h, respectively. The mechanical and structural properties, residual stress state and wear performance of the specimens wer

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d4a56668b688072c89c4e8fcb0d27c4d
https://doi.org/10.3139/120.111281

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Effects of static load on microstructural and mechanical performance of AISI 1050 medium carbon steel subjected to ultrasonic nanocrystal surface modification

Autor: Okan Unal, Fazil Husem, Erfan Maleki, Ibrahim Karademir, Yusuf Efe, Turan Das

Publikováno v: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96b9d2860ba9daae7f20a0f72fc6d9fd
https://doi.org/10.1016/j.msea.2021.142489

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Effects of constrained groove pressing, severe shot peening and ultrasonic nanocrystal surface modification on microstructure and mechanical behavior of S500MC high strength low alloy automotive steel

Autor: Erfan Maleki, Ibrahim Karademir, Auezhan Amanov, Okan Unal, Fazil Husem, Mustafa Bahattin Celik

Publikováno v: APPLIED SURFACE SCIENCE

S500MC high strength low alloy automotive steel is exposed to bulk severe plastic deformation (SPD) via constrained groove pressing (CGP) and surface severe plastic deformation (S2PD) via severe shot peening (SSP) and ultrasonic nanocrystal surface m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c48486eb2d5e08e0691a23d61379937
https://doi.org/10.1016/j.apsusc.2020.147935

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The effect of head hardening process on the residual stress of rails

Autor: Muhammet Emre Turan, Yavuz Sun, Ibrahim Tozlu, Hayrettin Ahlatci, Fazil Husem, Sait Ozcelik

Publikováno v: Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit. 232:589-595

In this study, the head hardening process was employed, by using a mixture of air and water under laboratory conditions, to improve the residual stress behavior of R260 grade rails . For this purpose, three types of specimens were selected. One group

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a458bfae7105fd85011a52906806f994
https://doi.org/10.1177/0954409716679450

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Enhancement in microstructural and mechanical performance of AA7075 aluminum alloy via severe shot peening and ultrasonic nanocrystal surface modification

Autor: Yusuf Efe, Erfan Maleki, Ruslan Karimbaev, Auezhan Amanov, Okan Unal, Ibrahim Karademir, Fazil Husem

Publikováno v: APPLIED SURFACE SCIENCE

In this experimental study, AA7075 aluminum alloy was subjected to pure severe shot peening (SSP), pure ultrasonic nanocrystalline surface modification (UNSM) and the combination of these two treatments. The treated specimens were analyzed with detai

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b12d31b596c3796847bc849314a55ef2
https://doi.org/10.1016/j.apsusc.2020.146922

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Investigation of nanostructured surface layer of severe shot peened AISI 1045 steel via response surface methodology

Autor: İbrahim Kocabaş, Erfan Maleki, Fazil Husem, Okan Unal, Haluk Yilmaz

Publikováno v: Measurement. 148:106960

Shot peening (SP) and also severe shot peening (SSP) provide high level compressive residual stress on a certain thickness just beneath the surface. By exposing severe plastic deformation (SPD) via SSP, the nanocrystallization is formed without any c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b2e621226edd25a7502c4aada8d2d7ca
https://doi.org/10.1016/j.measurement.2019.106960

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