The Effects of Li Additions on the Microstructure and Mechanical Properties of 380 Aluminum Casting Alloys

2011 ◽  
pp. 899-906
Author(s):  
Mostafa karamouz ◽  
Masoud Emamy ◽  
Jafar Rasizadeh ◽  
Mortaza Azarbarmas ◽  
Mohammad Alipour
Keyword(s):  
Mechanical Properties ◽  
Aluminum Casting ◽  
Casting Alloys ◽  
Microstructure And Mechanical Properties

The Porosity Description in Hypoeutectic Al-Si Alloys

2016 ◽  
Vol 682 ◽  
pp. 83-90 ◽  
Author(s):  
Bartłomiej Dybowski ◽  
Łukasz Poloczek ◽  
Andrzej Kiełbus
Keyword(s):  
Mechanical Properties ◽  
Volume Fraction ◽  
Quantitative Description ◽  
Eutectic Mixture ◽  
Shrinkage Porosity ◽  
Aluminum Casting ◽  
Important Group ◽  
Casting Alloys ◽  
Cast Alloys ◽  
Shrinkage Cavities

Al-Si alloys are the most important group among aluminum casting alloys. They are widely used in automotive and aerospace industries. Chemical modification of the Al-Si alloys leads to formation of fine, fibrous Al-Si eutectic mixture ensuring high mechanical properties. The modification is however known to increase the alloy porosity, which may, in turn, result in decrease of its properties. The following paper presents results of the research on quantitative description of the Al-Si cast alloys porosity and influence of Na modification on the porosity of AlSi9Mg alloy. Porosity in the hypoeutectic Al-Si alloys occurs in four types: shrinkage cavities, shrinkage porosity, isolated gas pores and gas pores surrounded by shrinkage porosity. Na modification leads to increase of shrinkage pores volume fraction.

Prediction of Microstructure and Mechanical Properties in Aluminium Castings after Heat Treatment

2011 ◽  
Vol 690 ◽  
pp. 315-318 ◽  
Author(s):  
Jian Zheng Guo ◽  
Wei Sheng Cao ◽  
Claude Alain Rolle
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Numerical Model ◽  
Experimental Measurements ◽  
Initial Condition ◽  
A357 Alloy ◽  
Casting Alloys ◽  
Microstructure And Mechanical Properties ◽  
Processing Step ◽  
Final Microstructure

A comprehensive numerical model has been developed for the calculation of the final microstructure and mechanical properties of aluminium casting alloys after heat treatment. The calculation is chained in such a way that the resultant microstructure of the previous processing step, such as casting, is used as the initial condition of the following step. In this paper an A357 alloy is chosen to study the microstructure and the evolution of the mechanical properties through the process from casting to heat treatment. The microstructure and mechanical properties are predicted and compared with experimental measurements.

Effects of Bismuth on the Microstructure and Mechanical Properties of AlSi9Cu3(Fe) Die Casting Alloys

2013 ◽  
Vol 765 ◽  
pp. 59-63 ◽  
Author(s):  
Stefano Ferraro ◽  
Giulio Timelli ◽  
Alberto Fabrizi
Keyword(s):  
Mechanical Properties ◽  
Trace Element ◽  
Die Casting ◽  
Eutectic Structure ◽  
Al Alloys ◽  
Casting Alloys ◽  
Microstructure And Mechanical Properties ◽  
Die Cast ◽  
Foundry Alloys ◽  
Cast Alloys

In secondary die cast Al alloys, Bismuth is generally considered an impurity element and present as a trace element in commercial foundry alloys. In the present work, the influence of different Bi content on the microstructure and mechanical properties of a commercial die cast AlSi9Cu3(Fe) alloy is investigated. The Bi level ranges between 0.015 and 0.3 wt.%. The results show that the presence of Bi seems to not produce significant changes in the microstructure and mechanical properties. Fine Bi-rich compounds are observed in the die cast alloys and they are mainly distributed in the interdendritic regions and along grain boundaries. TEM investigations revealed a complex Bi-Bi2Mg3eutectic structure, which presents mainly rod-type and blocky morphology.

APEX TERNALLOY 6

Alloy Digest ◽  
1987 ◽  
Vol 36 (2) ◽  
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
High Resistance ◽  
Room Temperature ◽  
Heat Treating ◽  
Aluminum Casting ◽  
Casting Alloys

Abstract APEX TERNALLOY 6 is one of a family of three APEX aluminum casting alloys (See APEX TERNALLOY 5, A1-273, November 1986.). It can be hardened by aging at room temperature and offers high mechanical properties. It has good castability, excellent machinability and high resistance to corrosion. Its many uses include aircraft components, gears, machinery parts, fittings, valves and ornamental products. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as casting, heat treating, machining, joining, and surface treatment. Filing Code: Al-277. Producer or source: Apex International Alloys Inc..

Overview of the Correlations between Process Parameters, Microstructure and Mechanical Properties of Reference Castings and Industrial Demonstrators

2016 ◽  
Vol 710 ◽  
pp. 35-40 ◽  
Author(s):  
Eleonora Battaglia ◽  
Franco Bonollo ◽  
Elena Fiorese ◽  
Giorgio Kral
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
Defect Formation ◽  
Die Casting ◽  
Casting Defects ◽  
Aluminum Casting ◽  
Microstructure And Mechanical Properties ◽  
Static Mechanical ◽  
Pressure Die Casting ◽  
Static Mechanical Properties

Among the Aluminum casting processes, High Pressure Die Casting (HPDC) is an efficient, versatile and economic way for producing large number of components. Nevertheless, because of the elevated amount of rejected castings, it is important to know which are the main causes of defect formation and their effects on microstructure and mechanical properties. This paper presents, within the European MUSIC project, an overview of the preliminary correlations obtained studying both castings with defect generator geometry, referred to as Horse-shoe Reference Castings, and industrial demonstrators, referred to as Gear Box Housing. The deduced correlations between static mechanical properties and casting defects highlighted interesting trends in both cases.

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