Results 141 to 150 of about 940,882 (376)

Mechanical and tribological characteristics of multicomponent nitride coverings on the basis of Zr, Ti, Nb, Cr and Si

Қарағанды университетінің хабаршысы. Физика сериясы, 2018
The multi-component nitride coverings on the basis of (Zr-Ti-Nb)N, (Zr-Ti-Cr-Nb)N and (Zr-Ti-Cr-Nb-Si)N are received by the method of vacuum-arc deposition from multielement cathodes Zr-Ti-Nb, Zr-Ti-Cr-Nb, Zr-Ti-Cr-Nb-Si in the environment of nitrogen ...
D.K. Yeskermessov, S.A. Pazylbek, A.K. Tussupbekova   +2 more
doaj  

Breaking hardness and electrical conductivity trade-off in Cu-Ti alloys through machine learning and Pareto front

Materials Research Letters
Balancing the hardness and electrical conductivity of copper alloys within complex compositions and processes poses a formidable challenge. This study proposes a strategy combining machine learning with the Pareto front techniques to identify optimal ...
Hang Fu, Tianchuang Gao, Jianbao Gao, Qin Li, Xiangpeng Meng, Min Zhang, Haoyue Ling, Jing Zhong, Lijun Zhang   +8 more
doaj   +1 more source

Mitigation of Cracks in High‐Performance Nickel‐Based Superalloys in Powder Bed Fusion Laser Beam of Metals Using a Metal Matrix Composite Approach

Advanced Engineering Materials, EarlyView.
High‐performance nickel‐based superalloys are often not processible in additive manufacturing (AM) due to hot cracking. The findings in this manuscript propose an efficient method to mitigate cracking and enhance mechanical properties of these alloys by producing a metal matrix composite, contributing to the material and process perspective of the AM ...
Klaus Büßenschütt, Maël Pontoreau, Christian Haase, Johannes‐Henrich Schleifenbaum   +3 more
wiley   +1 more source

Multi-component (Ti-Zr-Cr-Nb)N coatings’: structure and properties

Қарағанды университетінің хабаршысы. Физика сериясы, 2017
In the article discusses the results of the deposition of nanostructured coatings obtained by vacuum arc deposition of cathode (Ti-Zr-Cr-Nb), and analyzes their structure, morphology, elemental composition, and tribological properties (friction, wear ...
D.K. Yeskermessov, G.K. Uazyrkhanova, S.V. Plotnikov   +2 more
doaj  

Process Optimization in Laser Welding of IN792 DS Superalloy

Metals
Ni-base superalloys are employed to produce parts of aeronautic engines, space vehicles and power plants. During the production process or lifetime of components, cracks may occur which affect their performance.
Giuseppe Barbieri, Francesco Cognini, Chiara de Crescenzo, Alessandra Fava, Massimo Moncada, Roberto Montanari, Maria Richetta, Alessandra Varone   +7 more
doaj   +1 more source

A new method for the determination of the hardness of minerals [PDF]

, 1907
H. Z. Kip
openalex   +1 more source

Influence of Heat Treatment on Microstructure and Mechanical Properties at Elevated Temperatures of Nonweldable Ni‐Based Alloy Printed by Fused Filament Fabrication

Advanced Engineering Materials, EarlyView.
The fused filament‐fabricated MAR‐M247 alloy without hot isostatic pressing shows the lowest porosity of 4%. Heat treatment at 1220 °C produces coarse precipitates and carbides. Specimens heat‐treated at 1220 °C exhibit higher tensile strength (683 MPa) and elongation (10%) at room temperature.
Haneen Daoud, Ying Zheng, Agata Kulig, Natalja Agarkov, Esma Mese, Wolfgang Hofmann, Peter Würtele, Uwe Glatzel   +7 more
wiley   +1 more source

The Hardness of Metals [PDF]

, 1952
A. G. Quarrell
openalex   +1 more source

Investigation of Iron‐Aluminide‐Like Phase Composition in Complex Concentrated Fe32Cu12Ni11Ti16Al29 Alloy

Advanced Engineering Materials, EarlyView.
This work reveals the phase composition and quantitative morphology analysis of precipitation‐hardened Fe32Cu12Ni11Ti16Al29 complex‐concentrated alloy. The precipitates are shown to have a high coherency. Morphology transition between sphere, cuboidal, and elongated morphology is observed. Finally, the overaging behavior is captured using microhardness.
Rostyslav Nizinkovskyi, Lukas Hanisch, Georg Hasemann, Puspendu Sahu, Manja Krüger   +4 more
wiley   +1 more source

Effect of work-hardening on the relationship between compressive strength and hardness of quenched medium carbon steel

Nihon Kikai Gakkai ronbunshu
Since it is known that tensile strength and hardness are roughly proportional, a hardness test is often used as a simple and substitute test. However, it has been reported that the proportional relationship between tensile strength and hardness is broken
Yuta MIZUNO, Masayoshi KUMAGAI, Akihiro TANABE, Junzo SHIMBE   +3 more
doaj   +1 more source