Results 41 to 50 of about 10,967 (293)

Effect of serrated grain boundary on tensile and creep properties of a precipitation strengthened high entropy alloy

open access: yesScience and Technology of Advanced Materials, 2023
In this study, tensile and creep deformation of a high-entropy alloy processed by selective laser melting (SLM) has been investigated; hot ductility drop was identified at first, and the loss of ductility at elevated temperature was associated with ...
Jhuo-Lun Lee   +9 more
doaj   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

open access: yesAdvanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies   +2 more
wiley   +1 more source

Hot ductility and fracture mechanism of a Ti-bearing microalloyed steel

open access: yes工程科学学报, 2016
The hot ductility of a Ti-bearing microalloyed steel was studied at temperatures of 600 to 1350 ℃ by a thermal simulator Gleeble 1500.The fracture morphology and microstructure were observed by scanning electron microscopy and optical microscopy.The ...
YANG Xiao-gang   +4 more
doaj   +1 more source

The role of ductility in hot working

open access: yes, 2022
Strength and ductility are the important characteristics which govern the hot working properties of a material. This paper describes test methods for measuring hot workability and then discusses deformation and fracture mechanisms in hot working ...
Tegart, W. J. McG.
core  

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak   +3 more
wiley   +1 more source

Hot Ductility Loss in a Fe-Ni-Based Superalloy

open access: yesMetals, 2015
High temperature tensile tests have been conducted on samples of a Fe-Ni based superalloy, Incoloy A-286, and significant ductility loss has been observed at 1220 °C.
Chen-Wei Li   +3 more
doaj   +1 more source

Ultrahigh strength and toughness in W-Y2O3 alloy with bimodal and lamellar structures

open access: yesMaterials Research Letters, 2023
Oxide dispersion strengthened tungsten (ODS-W) alloy was prepared by chemical method, conventional sintering and hot-rolling method, which breaks through the research bottleneck of preparing tungsten alloys with excellent comprehensive mechanical ...
Lulu Li   +5 more
doaj   +1 more source

Hot ductility of Nb-V microalloyed steels [PDF]

open access: yes, 2010
LAUREA SPECIALISTICAMicroalloyed steel has become a good option in industry application for its high strength and low weight. However hot ductility problems exist during high temperature deformation which limit the commercial usage.
LIAN, SU
core  

Experimental Characterization of Mycelium‐Based Composites Under Multiple Loading Conditions

open access: yesAdvanced Engineering Materials, EarlyView.
This study examines the mechanical response of mycelium‐based composites under compression, shear, and tension using mechanical testing and imaging methods. The comparison between unpressed and hot‐pressed specimens shows that hot pressing is associated with higher compression and shear stiffnesses.
Shaghayegh Elahi   +5 more
wiley   +1 more source

Development and characteristics of a low rare-earth containing magnesium alloy with high strength-ductility synergy

open access: yesJournal of Magnesium and Alloys, 2023
In this study, we successfully developed a low RE containing Mg-3Y-2Gd-1Nd-0.5Zr (wt%) alloy with high strength-ductility synergy by combined processes of hot extrusion, hot rolling and ageing. This alloy exhibits an excellent strength-ductility balance (
Zijian Yu   +8 more
doaj   +1 more source

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