Results 81 to 90 of about 4,971,482 (300)

BALL BURNISHING OF INTERNAL TURNED SURFACES [PDF]

Journal of the Egyptian Society of Tribology, 2019
The paper presented is a work started in summer 2014 for improving surfaces of turned holes.The work was confined to two materials; aluminum alloy and brass alloy. The internal machined surfaces were burnished by ball burnishing tools.
M. M. Kesba, T. M. Asmaa, F. Abu-Gharbia
doaj   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

A model for coated surface hardness [PDF]

Surface and Coatings Technology, 2000
Abstract The authors present a model that predicts the hardness of a film deposited on the surface of a substrate. The model is based on a simple mathematical relationship involving the hardness of the film and the hardness of the substrate, together with the hardness of the composite film/substrate at a given film thickness/penetration depth ratio ...
Fernandes, J. V., Trindade, A. C., Menezes, L. F., Cavaleiro, A.   +3 more
openaire   +2 more sources

Impact of MgO Additions on the Oxidation Resistance and Compression Behavior of Vanadium Alloys

Advanced Engineering Materials, EarlyView.
An increase in oxidation resistance at 600 °C is achieved for alloys containing more than 2.5 wt.% MgO. It has been established that, along with V2O5, MgO6V2, and Mg2O7V2 are formed, which are presumed to enhance oxidative stability. Furthermore, the possible transformation of Mg‐vanadates through reaction with CO2, which presumably occurs in this ...
Ievgen Solodkyi, Mathias Galetz, Georg Hasemann, Fabian Lanoy, Emma White, Manja Krüger   +5 more
wiley   +1 more source

Evaluating surface hardened steels by laser-acoustics

, 2022
20792088The use of surface acoustic waves was studied as a means of evaluating surface-hardened steels. Four different grades of steel, 42CrMo4, C45, X153CrMoV12.1 and 90MnCrV8, were laser hardened up to a depth of 1.5 mm.
Schneider, Dieter, Grosser, Thomas, Schwarz, Thomas, Hofmann, Rainer, Hensel, Eckehard   +4 more
core   +1 more source

Laser Surface Hardening Characterisation of Metal Alloys with and Without Pre-Heat Treatment Impacting Industrial Innovations: A Critical Review

Journal of Manufacturing and Materials Processing
Laser surface hardening is a technique that improves various mechanical characteristics of different materials. The methods are being extensively used in the automobile, aerospace, tool manufacturing, and construction industries for various components ...
Srinidhi Kukkila, Gurumurthy Bethur Markunti, Sathyashankara Sharma, Shivaprakash Yethinetti Matada, Pavan Hiremath, Ananda Hegde   +5 more
doaj   +1 more source

Distinct Microstructural Characteristic Lengths Defining Notch Fatigue Crack Initiation and Propagation, and Defect Tolerance in Advanced Steels

Advanced Engineering Materials, EarlyView.
Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley   +1 more source

Significant improvement in surface hardness of Zr-based metallic glass by nanosecond pulsed laser irradiation in graphite powder water suspension

, 2023
Metallic glasses (MGs) have shown promising application prospects as structural materials due to their unique mechanical properties. While, for broadening their application as functional materials, significant improvement in surface hardness of MGs is ...
Yan, Jiwang, Huang, Hu, Qian, Yongfeng, Jiang, Minqiang, 蒋敏强, Zhang, Hongyang, Zhang, Lin, Minqiang Jiang, Yongfeng Qian, Lin Zhang, Hu Huang, Jiwang Yan, Hongyang Zhang   +12 more
core   +1 more source

Surface Hardening of Mild Steel: The Role of Carbon Source in Pack Carburizing on Hardness and Microstructure

Rekayasa Mesin
One effective approach to improve the surface hardness of steel is pack carburizing, in which carbon is introduced into the surface in a sealed chamber.
Nugroho Tri Atmoko, Margono Margono, Hendi Lilih Wijayanto, Agung Supriyanto, Roy Aries Permana Tarigan   +4 more
doaj   +1 more source

The effect of voltage and time of exposure on surface hardness of resin modified glass ionomer cement

Dental Journal, 2007
Light intensity can affect the polymerization of resin-based material therefore it will also affect surface hardness. To compensate reduction of light intensity becaused of the input of low voltage (200 and 210 volt), the exposure time was prolonged to ...
Titien Hary Agustantina
doaj   +1 more source