Results 51 to 60 of about 811,199 (195)

Relationship between casting modulus and grain size in cast A356 aluminium alloys [PDF]

open access: yes, 2012
Microstructure of Al-Si alloy castings depends most generally on melt preparation and on the cooling rate imposed by the thermal modulus of the component. In the case of Al-Si alloys, emphasis is put during melt preparation on refinement of pro-eutectic (
Abaunza, Unai   +3 more
core   +1 more source

Grain refinement in cast titanium 6-aluminium 4-vanadium by hydrogenation, deformation and recrystallisation [PDF]

open access: yes, 2013
Includes bibliographical references.Wrought Ti6Al4V has attractive mechanical properties but its usage is limited to highend aerospace applications because it is costly to machine components from wrought stock.
Vilane, Velile Nicholine
core   +1 more source

Effect of grain refinement on the stress rupture property of K447A alloy

open access: yesJournal of Aeronautical Materials
Grain refinement can effectively enhance mechanical properties of materials at low and medium temperatures,however,it may weaken the stress rupture property above the equicohesive temperature. To study the effect of grain refinement on the stress rupture
HU Pinpin   +7 more
doaj   +1 more source

Taguchi Approach for Optimization of Parameters that Effect Grain Size of Cast A357 Alloy

open access: yesArchives of Foundry Engineering, 2017
Grain refining and modification are common foundry practice for improving properties of cast Al-Si alloys. In general, these types of treatments provide better fluidity, decreased porosity, higher yield strength and ductility. However, in practice, there
Çolak M., Dışpınar D.
doaj   +1 more source

Effects of grain refinement on cast structure and tensile properties of superalloy K4169 at high pouring temperature [PDF]

open access: yesChina Foundry, 2016
In order to improve the filling ability of large complex thin wall castings, the pouring temperature should be increased, but this will result in the grain coarsening. To overcome this problem, two kinds of grain refiners of Co-Fe-Nb and Cr-Fe-Nb ternary
Zi-qi Jie, Jun Zhang, Tai-wen Huang
doaj   +1 more source

Determination of the degree of grain refinement in irradiated U-Mo fuels

open access: yesHeliyon, 2018
A simple, repeatable method for determination of the degree of grain refinement in irradiated Uranium-Molybdenum fuels has been developed. This method involves mechanical potting and polishing of samples along with examination using a scanning electron ...
Andrew M. Casella   +3 more
doaj   +1 more source

Effect of grain refinement on biodegradation and biomineralization of low calcium containing Mg–Ca alloy

open access: yesMaterials Research Express, 2020
The biodegradability and mechanical properties of magnesium make it suitable for temporary implant applications. However, its degradation rate in the physiological environment needs to be controlled. The effect of grain refinement on the degradation rate
R Shishir, Shebeer A Rahim, T Hanas
doaj   +1 more source

Effect of Casting Temperature on Grain Size of Al-Si Alloys Refined by a Novel Grain Refiner

open access: yesMaterials Science Forum, 2014
The automotive industry is willing of employing a greater amount of light metals like aluminium, magnesium and titanium, in order to reduce the total weight of the cars and, consequently, fuel consumption. Even though some casting aluminium alloys are commonly employed for automotive structural applications, their mechanical performances can be ...
Bolzoni, L, Nowak, M, Hari Babu, N
openaire   +3 more sources

The Poisoning Effect of Al and Be on Mg—1 wt.% Zr Alloy and the Role of Ultrasonic Treatment on Grain Refinement

open access: yesFrontiers in Materials, 2019
Addition of Al—Be master alloy to a Mg—Zr alloy reduces melt oxidation, however, it has a detrimental grain coarsening effect that is believed to be caused by an unknown interaction of Be with the Zr nucleant particles.
Nagasivamuni Balasubramani   +3 more
doaj   +1 more source

Dynamic recrystallization of a wrought magnesium alloy: Grain size and texture maps and their application for mechanical behavior predictions

open access: yesMaterials & Design, 2021
Effect of dynamic recrystallization (DRX) on the grain refinement and texture modification was studied by conducting a series of hot compression on AZ31B Mg alloy.
Yuan Li   +5 more
doaj   +1 more source

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