scholarly journals Modelling of Defects in Aluminium Cast Products

2021 ◽  
pp. 100824
Author(s):  
Mark Jolly ◽  
Laurens Katgerman
Keyword(s):  
Alloy Digest ◽  
1993 ◽  
Vol 42 (5) ◽  

Abstract Hastelloy Alloy G-30 filler metal is used as matching composition filler metal for fabrication of Hastelloy G-30 wrought and cast products and as filler metal for fabrication of G/G-3 alloy wrought products. It is also used for weld repair of high chromium castings and for weld overlay cladding. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as joining. Filing Code: Ni-432. Producer or source: Haynes International Inc.


Alloy Digest ◽  
2009 ◽  
Vol 58 (7) ◽  

Abstract Aluminum has long been accepted as a mold material. This alloy has a combination of faster machining, highest heat transfer, lighter weight, higher strength in thick sections, and greater thermal conductivity than other aluminum alloys. This datasheet provides information on physical properties, hardness, elasticity, and tensile properties. It also includes information on forming and machining. Filing Code: AL-423. Producer or source: Alcoa Forged and Cast Products.


Alloy Digest ◽  
2020 ◽  
Vol 69 (7) ◽  

Abstract Dura-Bar 80-55-06 is a ferritic-pearlitic ductile iron that is used for continuous cast products. It offers higher strength and wear resistance when compared to Dura-Bar 65-45-12, while still possessing good machinability and surface finish. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength. It also includes information on heat treating and machining. Filing Code: CI-71. Producer or source: Charter Dura-Bar, Inc.


Alloy Digest ◽  
2020 ◽  
Vol 69 (5) ◽  

Abstract Dura-Bar 65-45-12 is a ductile iron that is used for continuous cast products. Its microstructure consists of nodular graphite in a matrix of ferrite with small amounts of pearlite. Dura-Bar 65-45-12 is used for moderately stressed parts requiring good ductility and machinability. This datasheet provides information on composition, physical properties, tensile properties, compressive and shear strength. It also includes information on heat treating and machining. Filing Code: CI-69. Producer or source: Charter Dura-Bar, Inc.


2016 ◽  
Vol 684 ◽  
pp. 353-358 ◽  
Author(s):  
V.I. Yukhvid ◽  
M.I. Alymov ◽  
Vladimir N. Sanin ◽  
D.E. Andreev

Highly caloric mixtures of metal oxides with reducing agents used in SHS metallurgy can burn at combustion temperatures well above the melting point of final products, which ensures formation of cast products. The data of basic research in the field allowed us to suggest methods for manufacturing new cast nickel aluminides based alloy.


2019 ◽  
Vol 62 (3) ◽  
pp. 188-194 ◽  
Author(s):  
K. N. Vdovin ◽  
N. A. Feoktistov ◽  
D. A. Gorlenko ◽  
O. A. Nikitenko ◽  
D. D. Khamidulina

The article is devoted to study of the process of mold inoculation of high manganese steel castings using titanium carbonitride. Introduction considers basic principles, alloying and inoculation of casting alloys. Review of the papers on this topic made by native and foreign researchers was given. Conclusions were made on the materials presented in the studied papers, goals and tasks for studies were formed. Besides, in this part of the article relevance of the conducted researches was substantiated as well as practical significance for casters. The second part of the article describes routine of experiments. Materials involved when conducting experimental works were considered in details: charge materials, treatment agent, materials for foundry molds. Besides, there are also described the way to receive experimental cast products, methodology to determine thermal conditions for forming experimental models in foundry mold and regimen of thermal treatment. Herewith, methodology for conducting metallographical test was considered. The third part of the article mentions the results received during carrying out experimental works on mold inoculation using fine titanium carbonitride powder of high manganese steel castings. Influence of inoculation on the level of performance properties expressed via coefficients of abrasive wear and wear striking resistance was considered as well as change of the indicated peculiarities in relation to not inoculated alloy was evaluated. Besides, results of metallographical tests were given which allowed to substantiate change of the performance properties level of high manganese steel. Influence of thermal conditions of forming cast products was also evaluated, in particular speed of alloy cooling in foundry mold on the level of performance properties of inoculated high manganese steel. In final part of the article conclusions on the results of conducted researches were made as well as manufacturing recommendations were given for practical implementation of the work results to increase the level of performance properties of high manganese steel. Besides, recommendations on the most reasonable expenditure of titanium carbonitride powder ensuring receipt of the necessary characteristics of microstructure and as a consequence, increase of the level of performance properties were given.


2021 ◽  
pp. 23-38
Author(s):  
A.V. Trapeznikov ◽  
◽  
V.I. Ivanov ◽  
E.A. Prokhorchuk ◽  
Yu.V. Reshetnikov ◽  
...  

The Al2Ti intermetallic compound is a promising material for the development of heat-resistant alloys used for the manufacture of shaped parts for ground and aircraft power plants. Considers the features of the structure of two-phase alloys, evaluates the casting properties and technological characteristics in comparison with various AlTi alloys, as applied to the production of ingots and cast products. It is necessary to use technologies developed for titanium alloys in the production of cast products from such alloys.


Author(s):  
Róbert Figmig ◽  
Adriana Eštoková ◽  
Michaela Smoláková

Water absorptivity (WA) is one of the crucial parameters affecting the penetration of aggressive ions when concrete material is exposed to an aggressive environment and is closely linked with a depth of penetration of water under pressure into the concrete. Concrete used for prefabricated elements and structures as cesspits, manholes, pipe lines or parts of the wastewater treatment plants, has to meet a requirement for maximum water absorptivity of 6.0 wt. % in accordance with national and international standards. The article deals with a study of concretes’ water absorptivity of the pre-cast products for environmental purpose, where the exposure class XA (chemical attack) is required. The research is focused on reducing WA by using various modification of standard mix design (Portland cement, water, fine and coarse aggregate, plasticizer), e.g. by using different cement types, cementous supplementary additives, admixtures, finest aggregate particles or by reducing water/binder ratio. The concretes of various mix design modifications were compared with a reference concrete in relation to the standard. The economical and environmental aspects were also taken into consideration.


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