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The paper's aim is to present the processing of a new master alloy similar to STROBLOY.
The realized studies put in evidence the compounds nature which is formed during the AlSrTiB master alloy solidification.
Acicular Al4Sr compounds and Al3Ti compounds in AlSrTiB master alloy; x 1500 Fig.4.
X ray diffraction of AlSrTiB master alloy The AlSrTiB master alloy microstructure was remarked by the electron microscopy (fig.5 a,b) and by the microstructural elements evidence: 9 major phase - Al α solid solution; 9 acicular compounds - with a high weight, being identified as SrAl4 phase; 9 TiAl3 compounds in which titanium atoms are substituted by strontium atoms.
Conclusions Analyzing the microstructures of new quaternary master alloy AlSrTiB by electron microscopy and X ray diffraction results that: 9 This new type of master alloy can be used successfully in grain refining and modifying of aluminum alloys; 9 This new master alloy contains TiAl3, TiB2 or (Al,Ti)B2 involved in grain refining and also SrAl4 compounds involved in eutectic silicon modification process; 9 Also, to remark that new compounds like Ti3Al5, Al2Sr and AlxTiySiz can have a special role in structure improving process of Al-Si alloys, presence of compounds which was remarked in special literature too; 9 The average sizes of grain refining and modification particles are smaller than in case of grain refining and modification master alloys known till, which ensure a rapid dissolution of them in melt (TiAl3 and SrAl4), as well as avoiding sedimentation of compounds with boron content.

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

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

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

Coextruded aluminium-magnesium compounds are investigated in the subproject B3 ("Experimental and numerical investigations of the interface behavior of Al-Mg compounds") which is part of the special research area 692 - HALS at the Chemnitz University of Technology.
The compounds are manufactured in extrusion processes.
For partially bonded compounds (AlMgSi1/AZ31) some areas of the interface were showing cracks, Fig. 5 [2].
a) b) Fig. 7: a) schematic sketch - push-out test; b) schematic sketch - bending test The first approach was to describe the interface behaviour with macromechanical damage criteria [3], but this is especially insufficient for alloyed compounds (AlMgSi1/AZ31).
Fig. 8 illustrates the comparison of the computed interface strength values and the experimental values of unalloyed (Al99.5/Mg) and alloyed compounds (AlMgSi1/AZ31).

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.

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

Journal of Alloys and Compounds[J], 2006, 426: 155-161
Journal of Alloys and Compounds, 2007(1): 244-250
Effect of precipitation strength and ductility in a Mg-Zn-Y alloy[J], Journal of Alloys and Compounds, 2013(550): 114-123
Microstructure transformations in the heat-treated Mg-Zn-Y alloy[J], Journal of Alloys and Compounds, 20 13(577): 498-506
Application of quasicrystalline particles as a strengthening phase in Mg-Zn-Y alloys[J], Journal of Alloys and Compounds, 2002(342): 445-450.

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

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