Search results

Weldability of Magnesium and Aluminum Alloys using Nd-Yag Laser GEAMĂN Virgil1,a *, RADOMIR Irinel1,b and POP Mihai Alin1,c 1Transilvania University of Brasov, Romania ageaman.v@unitbv.ro, bi.radomir@unitbv.ro, cmihai.pop@unitbv.ro Keywords: weldability, laser, aluminum alloys, magnesium alloys, adhesive bonding.
The aim of this research is to evaluate the weldability using LWB process to join Mg/Al alloys using HLD 3504 – Laser Type Trumpf, to explain the experimental conditions and interpretation of results.
The problem of welding for aluminum/magnesium alloys have failed using arc welding, electron beams and laser beams, because much more intermetallic compounds are formed in the weld during fusion welding which is deleterious to the mechanical properties.
Chemical composition for tested alloys.
Kouadri-David - Welding of Thin Light Alloys Sheets by CO Laser Beam: Magnesium Alloys, Chapter 11.

Bormann, Phase formation during ball milling and subsequent thermal decomposition of Ti–Al–Si powder blends, Journal of Alloys and Compounds, 252 (1997) 245-251
Novák, Preparation of Ti–Al–Si alloys by reactive sintering, Journal of Alloys and Compounds, 470 (2009) 123-126
Vojtěch, Combination of reaction synthesis and Spark Plasma Sintering in production of Ti-Al-Si alloys, Journal of Alloys and Compounds, 752 (2018) 317-326
Weatherly, A study of combustion synthesis of Ti-Al intermetallic compounds, Journal of Materials Science, 31 (1996) 3707-3713
Prasad, Mechanical alloying characteristics and thermal stability of Ti–Al–Si and Ti–Al–Si–C powders, Journal of Alloys and Compounds, 475 (2009) 252-260

In the Ti-Ni dissimilar welding, there are many chances for intermetallic compounds (IMC) to form [32].
The phases TiNi3 and Ti2 Ni and are stable intermetallic compounds that poses unacceptable properties.
The heat input and contamination with nitrogen, oxygen and iron support the formation of these intermetallic compounds. [34-38].
Because titanium forms brittle intermetallic compounds with nearly every element (Ni, Fe, Cr, Mn, and Si) found in nickel based alloys, it is challenging to weld titanium to a nickel based alloy using the MIG welding process [70, 71].
Gao, Joints of TiBw/Ti6Al4V composites-Inconel 718 alloys dissimilar joining using Nb and Cu interlayers, Journal of Alloys and Compounds. 822 (2020)153559

The article is aimed on the analysis of the influence of cyclic loading on the internal friction measured on magnesium alloys, especially AZ31, AZ61 and AZ91, after homogenization annealing.
After the heat treatment, a polyedric microstructure was formed in alloys.
Mukai, Effect of deformation twins on damping capacity in extruded pure magnesium, Journal of Alloys and Compounds 626, (2015) 60-64
Kê, Low frequency internal-friction peaks as a function of strain amplitude in cold-worked dilute aluminium alloys, Journal de Physique Colloques 42, (1981) 307-312
Golovin, Effect of heat treatment on internal friction in ECAP processed commercial pure Mg, Journal of Alloys and Compounds 549, (2013) 38-45.

The hardness tests and microstructure analysis results show that the hardness decreased, grain boundary becomes trigemanal and compounded –melting structure (burnt structure) appeared when overburning occuring for this alloy .
And subsequent treatment can furtherly enhance mechanical properties to satisfy the needs of structural materials. 2024 alloy is one of deformation aluminum alloys, which contains copper and magnesium as major additional elements and can be strengthened through heat treatment [3-4].
The aim of solution treatment is to obtain high intensity supersaturated solid solution, which is a good basis for ageing treatment.
(2) When the temperature is heated above 500 ℃, compounded –melting structure (burnt structure) appears and overburning phenomenon occurs .
(in Chinese) [2] LIU D, ATKNSON H V, KAPRANOS P, etc: Journal of Materials Science and Engineering Vol.361(2003): 213-224

Effect of Intermetallic Compound Content on the Laser Welding Performance of Al-Fe Alloy Sheets Zhao Pizhi1, 2,a*, Pan Yanfeng1,b, Jiang Tao1,c, Shi Xiangjun1,d, and Zhang Qi2,e 1Suzhou Research Institute for Nonferrous Metals, No.200, Dongshenhu Road, Suzhou Industrial Park, Suzhou, 215026, China 2CHINALCO Research Institute of Science and Technology, No.62, Xizhimen North Street, Haidian District, Beijing, 100082, China azhao_pz@sinr.cn, bpan_yf@sinr.cn, cjiang_t@sinr.cn, dshi_xj@sinr.cn, ezhang_q@sinr.cn Keywords: Al-Fe alloy; Laser welding; Uniformity of weld pools; Intermetallic compound Abstract: The present study investigated the laser welding performance of Al-Fe alloy sheets with different contents of intermetallic compounds (IMCs).
And laser welding performance of Al alloys has attracted much attention of researchers [1, 2].
However, our preliminary study indicated that the abnormal weld pools would also occur in Nd: YAG laser welding of Al alloys, even under low laser peak power.
The aims are: (1) to investigate the effects of IMCs content and distribution on welding performance of Al-Fe alloy sheets, (2) to clarify the formation mechanism of abnormal welding pools. 2 Experimental procedures The chemical compositions of the Al-Fe alloys used in this study are listed in Table 1.
Irving, Welding Journal, 72 (1994) 47-50

Mechanical fatigue characteristics of Sn-SAg-X (X= Bi, Cu, Zn, and In) solder alloys [J].
Effect of Cu, Ag and Sb on the creep-rupture strength of lead-free solder alloys [J].
Journal of Alloys and Compounds, 417(1–2), 180–186
Journal of Alloys and Compounds, vol. 625, pp. 241-250, 1 3/15/ 2015
Journal of Alloys and Compounds. 2012. 510(1): 38-45.

Therefore, the aim of the present work is to investigate the effects of Er additions on aluminium A380 alloys on the microstructures and mechanical properties. 2.0 Methodology Two alloys with a basic composition of A380 aluminium alloy were melted in a crucible furnace and melting temperature at 750 °C.
Journal of Alloys and Compounds, 567, 77-81
Journal of Alloys and Compounds, 695, 2180-2189
Journal of Alloys and Compounds, 538, 21-27
Journal of Alloys and Compounds, 728, 844-853

Thus, this study aimed to investigate the effect of the second reflow towards the intermetallic compound formation and growth.
Journal of Alloys and Compounds, (2012). 511(1): p. 176-188
Journal of Alloys and Compounds, (2013). 567: p. 47-53
Journal of Alloys and Compounds, (2004). 376(1–2): p. 105-110
Journal of Alloys and Compounds, (2009). 473(1–2): p. 100-106

Alloys based on nickel aluminides are used for doping and modifying non-ferrous alloys [2, 3].
Alloys based on intermetallic compounds are known to be used as materials for producing composite coatings with high heat and wear resistance [8].
The aim of the work was to obtain composite alloys doped with zirconium, tungsten, its borides and a carbides from oxides, including mineral concentrates by means of liquid-phase method SHS.
The use of a mineral concentrate containing Zr in producing alloys based on the Al - Ni system leads to grinding of the alloy microstructure and the formation of the intermetallic compounds containing zirconium.
Gostishchev et al., Synthesis of Complex-Alloyed Nickel Aluminides from Oxide Compounds by Aluminothermic Method, Metals. 8.6 (2018) 439