Results 11 to 20 of about 852,102 (246)

Impeding Nucleation for More Significant Grain Refinement [PDF]

open access: yesSci Rep, 2020
© 2020, The Author(s). Grain refinement has been a topic of extensive research due to its scientific and technological importance as a common industrial practice for over seven decades.
Que, Z, Jiang, B, Fan, Z, Gao, F
core   +2 more sources

Effect of Al addition on microstructure of AZ91D [PDF]

open access: yes, 2014
Casting is a net shape or near net shape forming process so work-hardening will not be applicable for improving properties of magnesium cast alloys.
Joshi, U, Babu, NH
core   +7 more sources

Grain refinement and nucleation processes in Aluminium alloys through liquid shearing [PDF]

open access: yes, 2009
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The industrial practice of grain refinement of aluminium alloys involves the addition of inoculant particles to initiate alpha-aluminium grains at small ...
Haghayeghi, Reza
core   +7 more sources

The effect of the austenite grain refinement on the tensile and impact properties of cast Hadfield steel [PDF]

open access: yesMaterials Research, 2018
This paper studied the effect of the austenite grain refinement on the tensile and impact properties of a cast Hadfield steel (12 % Mn, 1.2 %C and 0.65 % Si). The austenite grain refinement was obtained by hafnium inoculation.
Bianka Nani Venturelli   +2 more
doaj   +2 more sources

Designing grain refinement passes for multi-direction forging: A phase-field crystal study

open access: yesJournal of Materials Research and Technology, 2023
Multi-directional forging is an effective plastic deformation method for polycrystalline grain refinement, and the degree of refinement is closely related to the number of forging passes. However, the relationship between the degree of refinement and the
Zhuo Song   +5 more
doaj   +1 more source

Grain refinement by rapid cyclic heating and its effect on cleavage fracture behaviour of an S690 high strength steel

open access: yesJournal of Materials Research and Technology, 2023
The simultaneous improvement of strength and toughness with grain refinement is widely known. However, the literature lacks studies on the grain refinement effect on cleavage fracture toughness in multiphase steels containing detrimental brittle ...
V. Bertolo   +7 more
doaj   +1 more source

Grain refinement efficiency of a new oxide-containing master alloy for aluminium casting alloys [PDF]

open access: yes, 2014
In this study, grain refinement efficiency of a new oxide master alloy based on MgAl2O4 was demonstrated on an A357 alloy. The grain size of the reference alloy was reduced by 50-60% with the addition of the master alloy and introduction of ultrasonic ...
Dmitry G. Eskin   +7 more
core   +1 more source

Comparative Study on the Grain Refinement of Al-Si Alloy Solidified under the Impact of Pulsed Electric Current and Travelling Magnetic Field

open access: yesMetals, 2016
It is high of commercial importance to generate the grain refinement in alloys during solidification by means of electromagnetic fields. Two typical patterns of electromagnetic fields, pulsed electric currents (ECP) and traveling magnetic field (TMF ...
Yunhu Zhang   +8 more
doaj   +1 more source

Dislocation exhaustion and ultra-hardening of nanograined metals by phase transformation at grain boundaries

open access: yesNature Communications, 2022
Strengthening of metals by grain refinement is limited by the inverse Hall-Petch effect. Here, the authors show nanograined metals can be strengthened by exhausting lattice dislocations via triggering of phase transformation at grain boundaries, instead ...
Shangshu Wu   +9 more
doaj   +1 more source

Analysis of the Effect of Simultaneous Melt Shearing and Cooling on Grain Formation and Rheology of A356 Aluminum Alloy

open access: yesCrystals, 2023
Despite the dozens of earlier research verifications, the contribution of shearing of molten metallic alloys during their solidification to grain formation is still ambiguous.
Mahmoud Ahmadein   +3 more
doaj   +1 more source

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