Hot cracking of binary mg–al alloy castings
WebJan 1, 2016 · The susceptibility to hot cracking was evaluated based on both the widths and locations of cracks in the resultant castings. Both binary Mg-4Al and commercial alloy … WebHot Cracking Susceptibility of Binary Mg-Al Alloys. Guoping Cao, Search for more papers by this author. Sindo Kou, Search for more papers by this author. Y. Austin Chang,
Hot cracking of binary mg–al alloy castings
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WebTo be able to make good shaped castings, aluminum alloys need to possess good castability. The term “good” can be elaborated as a homogeneous casting, uniform in its composition without pores and cracks and with the surfaces exactly reproducing the internal geometry of the mold used for the casting process. WebRR (Rolls Royce) 58 (2618) alloys, based on the casting alloy-Y- alloy (Al-4 Cu-1.5 Mg-2 Ni), has a composition, AI-2.2 Cu-1.5 Mg-1 Ni-1 Fe, has high strengthening effects due to higher copper and magnesium, and also due to dispersion hardening of intermetallic compound particles of FcNiAl 9, which are formed due to the presence of iron and nickel.
WebOct 24, 2011 · • Prevention of hot-cracking for alloys with wide freezing range. • Increase in strength and ductility due to fine-grained and faultless structure. ... Mg-Al casting alloy • Al is alloyed to increase strength, … WebJan 30, 2024 · Mg alloy is the lightest structural metal, which can play an important role in energy saving and emission reduction. In industry, over 80% of Mg components are made by high-pressure die casting [], but casting brings defects such as porosity and shrinkage cavity [2,3]; these defects reduce the consistency of mechanical properties and limit the …
WebJan 12, 2024 · ABSTRACT The lack of high-strength Al alloys that can be processed by laser powder bed fusion (LPBF) without formation of cracks is considered as one of the main issues for a wider diffusion of this technology in many fields. In this study, the effect of Cu content on the hot-crack resistance of Al-Cu-Mg alloys produced by LPBF was … Web16 hours ago · Among all the experimental alloys, Mg-1Er alloy ranked second with YS of 305±3 MPa, second only to Mg-1Ce alloy, but the plasticity of Mg-1Er alloy was less than 10%, far lower than that of low strength and high plasticity alloys such as Mg-1Sm. Wu et al. [20] studied the quasi-static mechanical properties of Mg-Er binary alloys with different ...
WebApr 11, 2024 · It shows that the Mg-6/7Zn-3Al alloys have similar HTS to that of AZ91 alloy and the liquid fraction (f l) of 0.3-0.5 is the critical f l range for hot tearing crack initiating in Mg-Zn-Al alloys. The theoretical calculation of the shrinkage stress/strain concentration and liquid phase properties during solidification effectively explain the ...
WebNov 30, 2016 · Small additions of bismuth (20 to 200 ppm) can be added to aluminum-magnesium alloys to counteract the detrimental effect of sodium on hot cracking. Boron is used in aluminum and its alloys as a ... incendie mont st michelWebFeb 17, 2024 · Magnesium alloys are the lightest structural metal. The lightness is the main reason for the interest for Mg in various industrial and clinical applications, in which lightweight structures are in high demand. Recent research and developments on magnesium Mg alloys are reviewed. A particular attention is focused on binary and … incendie messeryWebSep 1, 2016 · The mould temperature was kept constant at 335 °C for all the castings. The HTS of Mg-Al alloys follows the “Λ” shape and the maximum HTS appears at Mg-1 wt.% Al. Hot tearing tests of binary Mg-Al (1, 3, 6, and 9, wt.%) alloys were also carried out with an instrumented CRC mould (Fig. 10) [66]. The HTS is defined as the crack volume ... in3850bhWebFeb 15, 2006 · Abstract. Hot cracking of binary Mg–Al alloys in permanent mold casting was studied. The alloys contained from 0.25 to 8 wt.% Al. The hot cracking susceptibility … in37 infocusWebAug 1, 2024 · Thus, hot cracking was effectively eliminated using this dynamic deposition strategy. 5. Conclusions. Single-crystal Ni-based superalloys were successfully repaired … incendie mouawad analyseWebApr 1, 2009 · Hot Tearing Susceptibility of Binary Mg–Gd Alloy Castings and Influence of Grain Refinement. The hot tearing susceptibility (HTS) of binary Mg–Gd alloys is tested from 1.0 to 8.0 wt% using a constrained rod casting (CRC) mold. It is found that the curve of the HTS versus Gd content follows a…. incendie mouawadWebApr 10, 2024 · The effect of strontium (Sr) addition (1 wt. %) on the hot deformation behavior of Mg-7Sn (wt. %) was investigated by performing high temperature compression tests in the temperature range of 300 °C – 450 °C and at strain rates of 0.05 s-1 – 5 s-1.The flow stress curves suggested the occurrence of dynamic recrystallization (DRX). The … incendie mulhouse