scholarly journals ВПЛИВ УМОВ ІЗОТЕРМІЧНОГО ГАРТУВАННЯ НА ПСЕВДОПРУЖНУ ПОВЕДІНКУ БЕЙНІТНОГО ЧАВУНУ

World Science ◽  
2019 ◽  
Vol 1 (1(41)) ◽  
pp. 15-23
Author(s):  
Подрезов Ю. М. ◽  
Романко П. М. ◽  
Холявко В. В. ◽  
Марченко Н. М.
Keyword(s):  
Mechanical Properties ◽  
Cast Iron ◽  
Cost Effective ◽  
Ductile Cast Iron ◽  
Machine Building ◽  
Isothermal Quenching ◽  
Clear Understanding ◽  
Tempering Temperature ◽  
Theoretical Concepts ◽  
Damping Behavior

Application of ductile cast iron ADI is feasible and cost-effective, provided that there is a clear understanding of the mechanisms for the formation of their high complex mechanical properties. The use of such materials for the production of variable parts of machinery, or in other units of automobile and machine building will significantly extend the life of the equipment. It is established that the level of mechanical characteristics of the ADI cast iron varies in full accordance with the theoretical concepts of the influence of the tempering temperature on the formation of mechanical properties of such materials. The previous plastic deformation does not affect the mechanism of formation of pseudo-elasticity. The tendency to dampening increases with an increase in the temperature of isothermal quenching. The damping behavior of a material is a consequence of the formation of pseudo-elastic twins in the structure of the transformed martensite.

scholarly journals Microstructure Image Analysis for Estimating Mechanical Properties of Ductile Cast Iron

2014 ◽  
Vol 107 (17) ◽  
pp. 32-35 ◽  
Author(s):  
P. S.Hiremath ◽  
Anita Sadashivappa ◽  
Prakash Pattan
Keyword(s):  
Mechanical Properties ◽  
Image Analysis ◽  
Cast Iron ◽  
Ductile Cast Iron

Influence of Charge Composition on EN-GJS-500-7 Ductile Iron Properties in Foundry Operating Conditions

2020 ◽  
Vol 998 ◽  
pp. 42-47
Author(s):  
Alena Pribulová ◽  
Peter Futaš ◽  
Marcela Pokusova
Keyword(s):  
Mechanical Properties ◽  
Cast Iron ◽  
Ductile Iron ◽  
Ductile Cast Iron ◽  
Operating Conditions ◽  
Production Costs ◽  
Steel Scrap ◽  
Charge Composition ◽  
Iron Castings ◽  
Worldwide Production

Worldwide production of ductile iron castings reached in year 2017 26,428,148 metric tons, which is 34% of the total weight of all castings made from cast iron. The most significant increase in ductile iron castings was recorded in Slovakia, up to 78.6%. Castings from ductile iron have a very huge utilization thanks their very good foundry and mechanical properties. The current economic situation in all industries forces entrepreneurs and producers to rationalize production and reduce production costs, with a worldwide trend to increase the share of steel scrap, a technology for the production of ductile cast iron. The paper describes the results of research focused on the effect of charge composition, mainly the share of scrap steel on the final properties and structure of ductile iron EN-GJS-500-7 under the operating conditions of foundry. Six melts with different charge composition were made. The samples from all melts were taken and chemical analysis, microstructure analysis and testing on mechanical properties were made on them. The mechanical properties of produced globular cast irons were according with the relevant standard. It is important to mention that there has been a significant increase in strength characteristics in melts in which the carbon content exceeded 4% (CE = 4.7 and 4.8%, respectively).

Influence of Ca-Ba and Sr Base Inoculants on Metallurgical and Mechanical Properties of Grey and Ductile Cast Irons

2018 ◽  
Author(s):  
Dhruv Patel ◽  
Devendra Parmar ◽  
Siddharthsinh Jadeja
Keyword(s):  
Mechanical Properties ◽  
Cast Iron ◽  
Uniform Distribution ◽  
Ductile Cast Iron ◽  
Grain Structure ◽  
Spheroidal Graphite ◽  
Primary Carbide ◽  
Cast Irons ◽  
Melt Temperature ◽  
Nodular Graphite

Microstructural adaptation of cast iron alloys by inoculation is a well-known practice to swell their mechanical properties. In foundries, several inoculants have been used to refine grain structure, and to obtain uniform distribution of graphite flakes. Inoculation is one of the most critical steps in cast iron production. The effectiveness of inoculants depends on melt temperature, method of addition, type of inoculants, and holding time. In this paper, the effect of Ca-based, Ba-based, Ca-Ba based and Sr-based inoculants on microstructure and tensile properties of grey cast iron IS-210 and spheroidal graphite iron IS-1862 is reported. Results showed both Ca and Ba based inoculants were effective in obtaining uniform distribution of flaky and nodular graphite in IS-210, and IS-1862 cast irons, respectively. But in a case of Sr-based inoculant were highly effective for increase the nodularity of SG cast iron as well as succeed supreme yield strength for both grey and ductile cast iron. The amounts of ferrite in the as-cast matrix are excess with controlled granulometry for elimination of primary carbide in Sr-based inoculant.

Enhancing Mechanical Properties of Ductile Cast Iron Conrods through Different Heat Treatments

2016 ◽  
Author(s):  
Lucas Pintol Nishikawa ◽  
André Caetano Melado ◽  
Hélio Goldenstein ◽  
Luiz Felipe Bauri ◽  
Dinecio dos Santos Filho ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Cast Iron ◽  
Heat Treatments ◽  
Ductile Cast Iron

The influence of chromium on mechanical properties of austempered ductile cast iron

1995 ◽  
Vol 4 (1) ◽  
pp. 90-101 ◽  
Author(s):  
L. Bartosiewicz ◽  
I. Singh ◽  
F. A. Alberts ◽  
A. R. Krause ◽  
S. K. Putatunda
Keyword(s):  
Mechanical Properties ◽  
Cast Iron ◽  
Ductile Cast Iron ◽  
Austempered Ductile Cast Iron
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