Results 161 to 170 of about 8,360,762 (202)

Experimental investigation on the effect of barrel finishing processes on surface integrity of 18CrNiMo7-6 carburized rollers

Proceedings of the Institution of mechanical engineers. Part E, journal of process mechanical engineering, 2022
There has been growing interest in enhancing the properties of machine components to improve their reliability in recent years. Surface barrel finishing is one of the most widely used surface processes to decrease the surface roughness of components and ...
X. Zhang, Huaiju Liu, Shaojie Wu, Gaomeng Li, P. Wei   +4 more
semanticscholar   +1 more source

Effect of the ultrasonic surface rolling process on the surface modified layer and fatigue performance of 18CrNiMo7-6 alloy steel

Journal of Materials Research
This study systematically examines the effects of ultrasonic surface rolling (USRP) on 18CrNiMo7-6 alloy steel’s surface integrity and fatigue performance. Results show USRP significantly improves surface characteristics: surface roughness (Ra) decreases
Lanrong Liu, Kuo Hu, Lei Li, Zhihua Liu, Yongtao Ma   +4 more
semanticscholar   +1 more source

Study of Structural Inheritance of Austenite in Nb‐Microalloyed 18CrNiMo7–6 Steel

steel research international, 2018
Structural inheritance (SI) is a phenomenon in which the newly formed austenite retains the prior austenite grain size, shape, and orientation of the previous martensitic, bainitic, or even tempered martensitic microstructure. The present work studies SI in 18CrNiMo7–6 steel with 0.08 wt% Nb and compares it with that in a similar but non‐microalloyed ...
Mamta Sharma, Wolfgang Bleck
openaire   +1 more source

Experimental and numerical study of contact fatigue for 18CrNiMo7-6 and 20MnCr5 carburized gear tooth

Surface Topography Metrology and Properties, 2022
Gear manufacturers must make decisions about the manufacturing materials and superficial treatments. The best performance as to a type of failure should be evaluated. However, it is a time-demanding and costly process.
Oriana Palma Calabokis, Y. E. Núñez de la Rosa, Samara Paulin de Moraes, Estela Vicentim Antunes, Tiago Cousseau, C. H. da Silva   +5 more
semanticscholar   +1 more source

Investigation of Fatigue and Flaw Tolerance Performance of 18CrNiMo7-6 Case-hardening Steel

Proceedings of the Vertical Flight Society 76th Annual Forum, 2020
The aim of this study is to evaluate the effect of small defects on the fatigue life of the 18CrNiMo7-6 material. The evaluations are based on comparisons of S/N curves, which are obtained through coupon-level fatigue testing of pristine and intentionally flawed specimen sets.
Yahu Öztürk, Ufuk Akcihan, Fazh Melemez   +2 more
openaire   +1 more source

Characterization of hydrogen embrittlement sensitivity of 18CrNiMo7-6 alloy steel surface-modified layer based on scratch method

Anti-Corrosion Methods and Materials
Purpose The purpose of this paper is to assess the hydrogen embrittlement sensitivity of carbon gradient heterostructure materials and to verify the reliability of the scratch method. Design/methodology/approach The surface-modified layer of 18CrNiMo7-
Gang Wang, Mian Wang, ZiHan Wang, Guangtao Xu, Minghao Zhao, Ling-xiao Li   +5 more
semanticscholar   +1 more source

SURFACE TOPOGRAPHY IMPROVEMENT OF 18CRNIMO7-6 STEEL USING THE TAGUCHI TECHNIQUE

The ball burnishing process provides a fast, cost-effective, and straightforward method to enhance the physical-mechanical properties and surface integrity of industrially manufactured parts. In this study, ball burnishing was applied to improve the surface topography of 18CrNiMo7-6 steel, with milling used as a pre-burnishing treatment.
Dzierwa, Andrzej, Ptak, Anita, Ahmedov Beyali, Hajiyev, Anar   +3 more
openaire   +1 more source

Effect of residual stress and microstructure on corrosion resistance of carburised 18CrNiMo7-6 steel

Anti-Corrosion Methods and Materials, 2020
Purpose The purpose of this paper is to investigate, the effects of residual stress and microstructure on the corrosion behaviour of carburised 18CrNiMo7-6 steel in a 3.5% NaCl aqueous solution. Design/methodology/approach The electrochemical tests were conducted using an electrochemical workstation with a three-electrode system in a 3.5% NaCl ...
Gang Wang, Yue Zhang, Chen Gao, GuangTao Xu, MingHao Zhao   +4 more
openaire   +1 more source

Feinkornbeständigkeit von Bauteilen aus dem mikrolegierten Werkstoff 18CrNiMo7-6 in Abhängigkeit der Prozesskette

HTM Journal of Heat Treatment and Materials, 2010
Kurzfassung Die Steigerung der Aufkohlungstemperatur ist die effizienteste Möglichkeit, um die Wirtschaftlichkeit von Einsatzhärtungsprozessen zu steigern. Begrenzende Faktoren sind die Feinkornbeständigkeit, der verfügbaren Stähle, die Kriechfestigkeit der Bauteile und die Beständigkeit von Ofenbauteilen.
B. Clausen, S. Konovalov, F. Hoffmann, U. Prahl, H.-W. Zoch, W. Bleck   +5 more
openaire   +1 more source

Improving fatigue properties of 18CrNiMo7-6 steel by surface strengthening

Materials Letters, 2022
Ming-zhu Han, Hong-xia Zhang, Zhi-feng Yan, Ke-wei Li, Wen-xian Wang   +4 more
openaire   +1 more source