Results 31 to 40 of about 1,498,183 (376)

The origins of spontaneous grain refinement in deeply undercooled metallic melts [PDF]

, 2016
Spontaneous grain refinement in undercooled metallic melts has been a topic of enduring interest within the solidification community since its discovery more than 50 years ago. Here we present a comparative study of the solidification microstructures and
Castle, EG, Cochrane, RF, Mullis, AM
core   +1 more source

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

Crystals, 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, Naser A. Alsaleh, Mahmoud Ahmed Elsayed, Sabbah Ataya   +3 more
doaj   +1 more source

Mechanisms of enhanced heterogeneous nucleation during solidification in binary Al-Mg alloys [PDF]

, 2012
This is the post-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2012 ElsevierThe mechanisms involved in the grain refinement of Al–Mg alloys through varying the Mg content and applying ...
Anson, Atamanenko, Avedesian, Bergsmark, Bramfitt, Cao, Chai, Cochran, Contreras, Delannay, Desnain, Easton, Easton, Easton, Fan, Fan, Fan, Gibbs, Goldak, Greer, Greer, H.-T. Li, Ha, Haginoya, Impey, Johnsson, Johnsson, Johnsson, Jones, Khalifa, Korol’kov, Li, Maxwell, Mc Cartney, Men, Men, Murty, Nadella, Pai, Pilling, Quested, Scamans, Shackelford, Smialek, Surla, Thiele, Trumble, Xu, Y. Wang, Yu, Z. Fan   +50 more
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GRAIN REFINEMENT OF URANIUM BY ALLOYING [PDF]

, 1951
Binary alloys of uranium with 38 elements in the range 0.01 to 1.0 at.% were made. Three alloys havirg nominal compositions of 0.01, 0.1, and 1.0 at.% were made with most of the elements, and in addition, 12 ternary and quaternary alloys were made. The alloys were cast, rolled to 7/8-inch-diameter bars, heat treated, and examined for grain size. (auth)
Saller, H. A., Keeler, J. R., Eddy, N. S.   +2 more
openaire   +3 more sources

The grain refinement of 1070 alloy by different Al-Ti-B mater alloys and its influence on the electrical conductivity

Results in Physics, 2019
The excellent grain refinement effectiveness and good electrical conductivity is difficult to be simultaneously obtained due to the influence of both the grain boundary and excessive Ti in the usually used refiners, such as Al-5Ti-1B master alloy.
Xuexia Xu, Yanting Feng, Hui Fan, Qing Wang, Guozhen Dong, Guowei Li, Zihan Zhang, Qing Liu, Xiaoliang Fan, Haimin Ding   +9 more
doaj   +1 more source

Texture evolution in biocompatible Mg-Y-Re alloy after friction stir processing [PDF]

, 2019
The presented study deals with the investigation of biocompatible WE 43 Mg-based alloy processed via the combination of rotary swaging (RS) and friction stir processing (FSP) at three different rotational speeds of 400 RPM, 800 RPM, and 1200 RPM.
Dvořák, Jiří, Kocich, Radim, Král, Petr, Kunčická, Lenka   +3 more
core   +1 more source

The Mechanism of Inhomogeneous Grain Refinement in a NiTiFe Shape Memory Alloy Subjected to Single-Pass Equal-Channel Angular Extrusion

Metals, 2017
Based on electron backscattered diffraction analysis and transmission electron microscopy observation, the mechanism of inhomogeneous grain refinement in a NiTiFe shape memory alloy (SMA) subjected to single-pass equal-channel angular extrusion (ECAE ...
Yanqiu Zhang, Shuyong Jiang
doaj   +1 more source

Grain refinement of Al-Mg-Sc alloy by ultrasonic treatment [PDF]

, 2015
In foundry practice, ultrasonic treatment has been used as an efficient technique to achieve grain refinement in aluminium and magnesium alloys. This article shows the strong effect of pouring temperature and ultrasonic treatment at various temperatures ...
A. L. Greer, A. L. Greer, A. M. P. Pinto, A. Pisch, A. Ramirez, B. Cantor, B. S. Murty, D. Gao, E. A. Marquis, G. I. Eskin, G. I. Eskin, H. K. Feng, H. Puga, H. Puga, H. Puga, H. T. Li, H. Xu, J. Barbosa, J. D. Hunt, K. Xia, M. A. Easton, M. Johnsson, M. Khosro Aghayani, M. Qian, M. Qian, N. Q. Tuan, O. V. Abramov, P. S. Mohanty, R. Abbaschian, R. Haghayeghi, R. Haghayeghi, R. Sawtell, S. Costa, S. Lathabai, S. Nafisi, S. R. Yu, S. Zhang, U. Patakham, W. G. Zhang, W. Khalifa, X. Jian, X. Jian, X. Liu, Y. L. Li   +43 more
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Mechanisms of grain refinement by intensive shearing of AZ91 alloy melt [PDF]

, 2010
The official published version of the article can be accessed at the link below.It has been demonstrated recently that intensive melt shearing can be an effective approach to the grain refinement of both shape casting and continuous casting of Mg alloys.
Avedesian, B. Jiang, Backerud, Bayandorian, Burden, Byun, Cao, Cao, Christian, Donnelly, Emley, Fan, Fan, Granger, Greer, Günther, H. Men, Hitchcock, Hunt, Jones, Jones, Kim, Kim, Maltais, Maxwell, McCartney, Nafisi, Nelson, O’Reilly, Quested, Quested, Reed-Hill, St. John, Tassa, Tiner, Turnbull, Wang, Z. Fan, Zhang   +38 more
core   +1 more source

Enhanced heterogeneous nucleation on oxides in Al alloys by intensive shearing [PDF]

, 2012
Oxides, in liquid aluminium alloys, can cause severe difficulties during casting, contribute to the formation of cast defects and degrade the mechanical properties of cast components.
Davis J R, H T Li, Impey S A, Li H T, Sigworth G K, Timelli G, Y Wang, Z Fan   +7 more
core   +1 more source