Results 41 to 50 of about 132,770 (306)

Thermomechanical Grain Refinement in AA6082-T6 Thin Plates under Bobbin Friction Stir Welding

Metals, 2018
Bobbin friction stir welding (BFSW), with its fully penetrated pin and double-sided shoulder, can provide high rates of heat generation. This produces solid-state thermo-mechanical grain refinement.
Abbas Tamadon, Dirk J. Pons, Kamil Sued, Don Clucas   +3 more
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
core   +1 more source

Study on the grain refinement mechanism of the machined surface of Inconel 718

Journal of Materials Research and Technology
In machining processes, the high temperature and stress can lead to plastic deformations of the workpiece material. Thermomechanical loading has a significant impact on the microstructure of the machined surface, including grain deformation ...
Yu Qi, Jingjie Zhang, Mingdong Yi, Chonghai Xu, Peirong Zhang, Zhaoqiang Chen, Guangchen Li   +6 more
doaj   +1 more source

Effect of high-pressure rolling followed by laser processing on mechanical properties, microstructure and residual stress distribution in multi-pass welds of 304L stainless steel [PDF]

, 2016
Multi-pass fusion welding by a filler material (wire) is normally carried out to join thick steel sections used in most engineering applications. Multiple thermal cycles from a multi-pass weld resulted in a variable distribution of residual stress field ...
Ganguly, Supriyo, Pirling, Thilo, Suder, Wojciech, Sule, Jibrin   +3 more
core   +2 more sources

New grain refinement method for aluminum cast alloys without adding grain refiner.

Journal of Advanced Science, 2001
Grain refiner has conventionally been added during the casting process of grain refinement, but it has recently become a recycling problem, which calls for the efforts for development of a new grain refinement method. In this paper, a technological breakthrough has been achieved, where grain refinement was successfully completed by applying ultrasonic ...
Yoshiaki OSAWA, Susumu TAKAMORI, Akira SATO   +2 more
openaire   +2 more sources

Effects of solute content on grain refinement in an isothermal melt [PDF]

, 2011
This is the port-print version of the article. The official published version can be obtained from the link below - Copyright @ 2011 Acta Materialia Inc.
Fan, Z, Men, H
core   +1 more source

Role of bimodal-grained structure with random texture on mechanical and corrosion properties of a Mg-Zn-Nd alloy

Journal of Magnesium and Alloys, 2022
Fine grained ZN20 alloy was obtained by combining equal-channel angular pressing (ECAP) with extrusion. Microstructural observation showed an obvious grain refinement with an average grain size of 10 µm after ECAP.
Ming Gao, Ke Yang, Lili Tan, Zheng Ma
doaj   +1 more source

Action Contraction [PDF]

, 2000
The question we consider in this paper is: “When can a combination of fine-grain execution steps be contracted into an atomic action execution”? Our answer is basically: “When no observer can see the difference.” This is worked out in detail by defining ...
Rensink, A.
core   +4 more sources

Grain refinement mechanism of nitrogen ion implantation in 7075-T651 aluminum alloy: Insights from the cellular automaton method

Journal of Materials Research and Technology
Ion implantation can strengthen metal surfaces by inducing grain refinement. However, the refinement mechanism remains unclear, which affects the precise application of the process.
Yelin Zeng, Tingting Jiang, Jinyuan Tang, Jiangping Zhu, Xiaocheng Shen, Yihao Ling   +5 more
doaj   +1 more source

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

, 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 (
, A I Fernández-Calvo, A Niklas, Ansara I, Apelian A, Argyropoulos, Bekaert F, Charbonnier J, Emadi D, Gilbert Kaufmann J, Gowri S, Gruzleski J E, Gädke A F W, Günther B, Heusler L, Ibarra D C, J Lacaze, Jiang H, MacKay R I, Menk W, Niklas A, Spittle J A, U Abaunza   +22 more
core   +4 more sources