Results 151 to 160 of about 622 (185)

Effect of Microstructure on Fatigue-Crack Propagation of 18CrNiMo7-6 High-Strength Steel

International Journal of Fatigue, 2022
Yue Zhang, Shuyan Wang, GuangTao Xu, Gang Wang, MingHao Zhao   +4 more
openaire   +3 more sources

Hard milling of carburized and waterjet peened 18CrNiMo7-6 steel

Machining Science and Technology, 2020
Post-mixed waterjet peening is an effective treatment method for compressive residual stress field.
Yongtao Ma, Yongbin Zhang, Jiancheng Liu, Lanrong Liu, Junzhen Gong   +4 more
openaire   +1 more source

Fatigue fracture of surface-modified layers in 18CrNiMo7-6 carburized steel

Engineering Failure Analysis, 2022
Abstract A modified layer of a certain thickness is produced on the surface of 18CrNiMo7-6 alloy steel after carburizing and quenching that greatly affects the microstructure and fatigue properties of the material. In this work, the fatigue performance of each layer was studied.
Yue Zhang, LiuCheng Lu, GuangTao Xu, Gang Wang, MingHao Zhao   +4 more
openaire   +1 more source

Size Effect on the Fatigue Performance of 18CrNiMo7‐6 Alloy Steel

steel research international, 2021
The size effect on the fatigue performance of 18CrNiMo7‐6 alloy steel is investigated. From rotating bending fatigue tests at room temperature, the relationship between the stress amplitude and the number of cycles of specimens with different diameters is obtained.
Gang Wang, Chen Gao, Yue Zhang, GuangTao Xu, MingHao Zhao   +4 more
openaire   +1 more source

Characterization of Nonmetallic Inclusions in 18CrNiMo7-6

Metallurgical and Materials Transactions B, 2018
The detrimental effect of nonmetallic inclusions (NMIs) in steels on, e.g., fatigue lifetime is well known. In order to increase the durability and safety of materials and components, inclusion control and a deep understanding of inclusion formation are essential.
Johannes Gleinig, Anja Weidner, Jens Fruhstorfer, Christos G. Aneziris, Olena Volkova, Horst Biermann   +5 more
openaire   +1 more source

Tailoring the Hardening Behavior of 18CrNiMo7‐6 via Cu Alloying

steel research international, 2015
In order to improve the rolling contact fatigue (RCF) behavior of gear steels, a concept to increase their damage tolerance is developed alternatively to the conventional approach of improving the degree of steel cleanliness. For that purpose, Cu is used as a main alloying element in order to trigger the precipitation of nano‐sized Cu precipitates ...
Margarita D. Bambach, Wolfgang Bleck, Hendrik S. Kramer, Marcus Klein, Dietmar Eifler, Tilmann Beck, Holger Surm, Hans‐Werner Zoch, Franz Hoffmann, Aurel Radulescu   +9 more
openaire   +1 more source

Effect of shot peening intensity on surface integrity of 18CrNiMo7-6 steel

Surface and Coatings Technology, 2021
Abstract The surface integrity of components treated by shot peening is determined by many influencing factors, which are generally divided into shot peening process parameter, procedure parameter and machine parameter. To understand the influencing relationship of these parameters, and thereby obtain the appropriate peening intensity for the ...
Jizhan Wu, Peitang Wei, Huaiju Liu, Boyu Zhang, Guibao Tao   +4 more
openaire   +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

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

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