Correction of casting defects in aluminum alloys using plasma welding

2021 ◽  
Author(s):  
D. S. Belinin ◽  
Yu D. Schitsyn ◽  
R. G. Nikulin ◽  
T. V. Olshanskaya ◽  
M. V. Pichkalev
Keyword(s):  
Aluminum Alloys ◽  
Casting Defects ◽  
Plasma Welding

scholarly journals Decrease in Casting Defects in Cast Aluminum Alloys by HotShear Spinning

2008 ◽  
Vol 49 (573) ◽  
pp. 0990-0994 ◽  
Author(s):  
Minoru ISHIGURO ◽  
Ken-ichiro MORI ◽  
Hirokazu OSAKO ◽  
Takayuki NONAKA ◽  
Daigo SUGIYAMA ◽  
...  
Keyword(s):  
Aluminum Alloys ◽  
Casting Defects ◽  
Cast Aluminum ◽  
Cast Aluminum Alloys

Fatigue life assessment of aluminum alloys with casting defects

1993 ◽  
Vol 44 (6) ◽  
pp. 857-874 ◽  
Author(s):  
B. Skallerud ◽  
T. Iveland ◽  
G. Härkegård
Keyword(s):  
Fatigue Life ◽  
Aluminum Alloys ◽  
Life Assessment ◽  
Casting Defects ◽  
Fatigue Life Assessment

Friction Stir Processing: Effect on Microstructure and Mechanical Properties in Cast Aluminum Alloys

2019 ◽  
Author(s):  
Murat Tiryakioğlu ◽  
Nelson Netto
Keyword(s):  
Aluminum Alloys ◽  
Friction Stir Processing ◽  
Quality Index ◽  
Structural Quality ◽  
Casting Defects ◽  
Cast Aluminum ◽  
Friction Stir ◽  
Index Analysis ◽  
Cast Aluminum Alloys ◽  
Eutectic Si

Microstructural and mechanical data from the literature of friction stir processed (FSPed) cast aluminum alloys were reanalyzed. Results indicated that friction stir processing (FSP) produced more homogeneous microstructures, with finer eutectic Si particles, grains, and intermetallics. However, a relationship between microstructural measures and process parameters could not be established. Regardless of the resultant microstructure, structural casting defects, i.e., pores and oxide films, were reduced in size or completely eliminated after FSP. Consequently, ductility and fatigue life were drastically improved by FSP. Quality index analysis showed that some FSPed specimens have a higher structural quality than aerospace and premium quality castings, and can be used to determine the intrinsic properties of cast aluminum alloys.

Plasma Welding of Aluminum Alloys with the Use of Two Direct ARCS on Reverse-Polarity Current

Metallurgist ◽  
2016 ◽  
Vol 59 (11-12) ◽  
pp. 1234-1237 ◽  
Author(s):  
Yu. D. Shchitsyn ◽  
D. S. Belinin ◽  
V. Yu. Shchitsyn ◽  
S. D. Neulybin
Keyword(s):  
Aluminum Alloys ◽  
Plasma Welding ◽  
Reverse Polarity

scholarly journals Plasma welding of aluminum alloys when two arc plasma torch at current reverse polarity

2015 ◽  
pp. 61-70
Author(s):  
Iuri Shchitsyn ◽  
Ivan Gilev ◽  
Dmitrii Belinin ◽  
Sergei Neulybin ◽  
Aleksandr Bazhenov
Keyword(s):  
Aluminum Alloys ◽  
Plasma Torch ◽  
Arc Plasma ◽  
Plasma Welding ◽  
Reverse Polarity ◽  
Arc Plasma Torch

Billet Casting Principles and Practice

2000 ◽  
pp. 119-148
Keyword(s):  
Aluminum Alloys ◽  
Continuous Casting ◽  
Grain Growth ◽  
Direct Chill ◽  
Casting Defects ◽  
Grain Refining ◽  
Charge Materials ◽  
Casting Technique ◽  
Aluminum Extrusions

Abstract This chapter describes various aspects of the billet making process and how they affect the quality of aluminum extrusions. It begins with an overview of the direct-chill continuous casting technique and its advantages over other methods, particularly for hard aluminum alloys. It then discusses the influence of casting variables, including pouring temperature and cooling rate, and operating considerations such as the make-up of charge materials, fluxing and degassing procedures, and grain refining. The chapter also provides information on vertical and horizontal casting systems, billet homogenization, and the cause of casting defects, including cracking and splitting, segregation, porosity, and grain growth.

Active-passive filling friction stir repairing of casting defects in ZL210 aluminum alloys

2020 ◽  
Vol 106 (11-12) ◽  
pp. 5307-5315
Author(s):  
Qi Wen ◽  
Ruixiu Guo ◽  
Qi Song ◽  
Zhibo Dong ◽  
Gongping Liu ◽  
...  
Keyword(s):  
Aluminum Alloys ◽  
Casting Defects ◽  
Friction Stir

Analytical Electron Microscopy Study of Second-Phase Particles in 7075 and 7475 Aluminum Alloys

1985 ◽  
Vol 43 ◽  
pp. 348-349
Author(s):  
M. Raghavan ◽  
J. Y. Koo ◽  
J. W. Steeds ◽  
B. K. Park
Keyword(s):  
Aluminum Alloys ◽  
Silicon Oxide ◽  
Analytical Electron Microscopy ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Partial Substitution ◽  
Second Phase ◽  
X Ray ◽  
Second Phase Particles ◽  
Almost All

X-ray microanalysis and Convergent Beam Electron Diffraction (CBD) studies were conducted to characterize the second phase particles in two commercial aluminum alloys -- 7075 and 7475. The second phase particles studied were large (approximately 2-5μm) constituent phases and relatively fine ( ∼ 0.05-1μn) dispersoid particles, Figures 1A and B. Based on the crystal structure and chemical composition analyses, the constituent phases found in these alloys were identified to be Al7Cu2Fe, (Al,Cu)6(Fe,Cu), α-Al12Fe3Si, Mg2Si, amorphous silicon oxide and the modified 6Fe compounds, in decreasing order of abundance. The results of quantitative X-ray microanalysis of all the constituent phases are listed in Table I. The data show that, in almost all the phases, partial substitution of alloying elements occurred resulting in small deviations from the published stoichiometric compositions of the binary and ternary compounds.

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