Results 51 to 60 of about 79,715 (260)

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 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

Random vibration study of cold rolling mill excited by different hardness of strip steel

Applications in Engineering Science
Purpose:: The hardness of individual steel strips demonstrates inherent variability in actual production processes. Systematic hardness testing must be conducted to investigate the distribution patterns of strip hardness.
Weiquan Sun, Xiaoqiang Yan, Shen Wang, Lu Zhang, Weijing Yun, Yuchen Chen   +5 more
doaj   +1 more source

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

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Evaluating Energy Absorption Performance of Filled Lattice Structures

Advanced Engineering Materials, EarlyView.
Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney, William P. King, Iwona Jasiuk   +2 more
wiley   +1 more source

TRIBOLOGY AND TOPOGRAPHY OF HARD MACHINED SURFACES

Cutting & Tools in Technological System, 2021
In machining automotive industrial parts by hard machining procedures, the topographic characteristics of high accuracy surfaces have high importance. In this paper 2D and 3D surface roughness features of gear bores machined by hard turning and grinding are demonstrated.
openaire   +2 more sources

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

Advanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat, Guido Barale, John Stavridis, Ehsan Norouzi, Jin‐Yoo Suh, Dong‐Ik Kim, Luca Iuliano, Abdollah Saboori   +7 more
wiley   +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

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