Kinetics of austenite decomposition in white chromium-nickel cast iron alloyed with boron

1968 ◽  
Vol 10 (11) ◽  
pp. 899-900
Author(s):  
L. T. Kalinina ◽  
V. A. Krivosheev ◽  
�. A. Anishchenko
Keyword(s):  
Cast Iron ◽  
Austenite Decomposition ◽  
Kinetics Of ◽  
White Chromium

Effect of Minor Additives on First Stage Graphitisation in White Cast Iron

1984 ◽  
Vol 34 ◽  
Author(s):  
P. L. Roy ◽  
A. K. Chakrabart ◽  
P. Banerjee
Keyword(s):  
Mechanical Properties ◽  
Cast Iron ◽  
Sodium Chloride ◽  
Yield Strength ◽  
White Cast Iron ◽  
Elemental Sulphur ◽  
Optimum Dose ◽  
White Iron ◽  
Kinetics Of ◽  
Strength And Ductility

ABSTRACTMinor additions (0.05-0.2 wt.%) of sodium chloride, hexachloroethane and elemental sulphur to commercial white iron melts have been found to enhance the kinetics of first stage graphitisation during subsequent annealing of white iron samples. The optimum dose of sodium chloride and hexachloroethane addition is around 0.1%. Yield strength and ductility of annealed test bars treated with NaCl or C2Cl6 compare favourably with those of untreated test bars. Sulphur treatment causes slight deterioration in mechanical properties. Fully grown nodules in both treated and untreated samples appear porous under SEM. Possible mechanisms of acceleration of graphitisation in the treated samples have been suggested.

Corrosion kinetics of Al2O3+ZrO2·5CaO coatings applied on gray cast iron substrate

2017 ◽  
Vol 43 (17) ◽  
pp. 15708-15713 ◽  
Author(s):  
Abhinav ◽  
N. Krishnamurthy ◽  
Ranjana Jain
Keyword(s):  
Cast Iron ◽  
Gray Cast Iron ◽  
Gray Cast ◽  
Corrosion Kinetics ◽  
Kinetics Of

scholarly journals Effect of Nickel Equivalent on Austenite Transition Ratio in Ni-Mn-Cu Cast Iron

2013 ◽  
Vol 13 (2) ◽  
pp. 53-58 ◽  
Author(s):  
A. Janus ◽  
A. Kurzawa
Keyword(s):  
Cast Iron ◽  
Chemical Composition ◽  
Chemical Analysis ◽  
Wall Thickness ◽  
Brinell Hardness ◽  
Austenite Decomposition ◽  
Structural Components ◽  
Microscopy Image ◽  
Image Analyser ◽  
Nickel Equivalent

Abstract Determined was quantitative effect of nickel equivalent value on austenite decomposition degree during cooling-down castings of Ni-Mn- Cu cast iron. Chemical composition of the alloy was 1.8 to 5.0 % C, 1.3 to 3.0 % Si, 3.1 to 7.7 % Ni, 0.4 to 6.3 % Mn, 0.1 to 4.9 % Cu, 0.14 to 0.16 % P and 0.03 to 0.04 % S. Analysed were castings with representative wall thickness 10, 15 and 20 mm. Scope of the examination comprised chemical analysis (including WDS), microscopic observations (optical and scanning microscopy, image analyser), as well as Brinell hardness and HV microhardness measurements of structural components.

Cr Influence on Steel Microstructure and Kinetics of Austenite Decomposition at Near-Bay Temperatures

2005 ◽  
pp. 311-320 ◽  
Author(s):  
Andrej Samoilov ◽  
Yuri Titovets ◽  
Nikolay Zolotorevsky ◽  
Gottfried Hribernig ◽  
Andreas Pichler
Keyword(s):  
Austenite Decomposition ◽  
Steel Microstructure ◽  
Kinetics Of

Kinetics of fracture of nodular cast iron by the method of high-speed photography

1977 ◽  
Vol 9 (12) ◽  
pp. 1462-1467
Author(s):  
I. S. Guz' ◽  
A. P. Lyubchenko ◽  
V. M. Matsevityi ◽  
S. L. Molodtsov ◽  
L. A. Smirnova
Keyword(s):  
Cast Iron ◽  
High Speed ◽  
Nodular Cast Iron ◽  
High Speed Photography ◽  
Kinetics Of

scholarly journals Bifilm Defects in Ti-Inoculated Chromium White Cast Iron

Materials ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3124
Author(s):  
Malwina Dojka ◽  
Marcin Stawarz
Keyword(s):  
Cast Iron ◽  
White Cast Iron ◽  
Crystallization Front ◽  
Point Of View ◽  
Austenitic Matrix ◽  
Wear Properties ◽  
The Impact ◽  
Chromium Cast Iron ◽  
Titanium Compounds ◽  
White Chromium

In recent years, white chromium cast iron has gained a well-settled position among wear-resistant materials. In recent times, chromium cast iron samples containing titanium have attracted attention. In cast iron samples, titanium combines with carbon and forms TiC particles, which may be form a crystallization underlay for eutectic M7C3 carbides and austenite. Accordingly, the inoculation process occurring in the crystallizing alloy should result in the proper, regular distribution of fine eutectic chromium carbides in the austenitic matrix. The presented research was conducted on 20% Cr hypoeutectic white cast iron with the addition of 0.5, 1, and 2% of Ti. Ti inoculation and the presence of TiC allowed for superior wear properties to be obtained. However, the conducted study revealed a significant decrease in the impact strength of examined alloys, especially for the cast iron samples with a high amount of Ti, in which the TiC compounds agglomerated. Titanium compounds accumulate in clusters and their distribution is irregular. Most of the TiC compounds were transported by the crystallization front into the center of the castings, where micropores were formed, meaning they were no longer effective crystallization underlays. In the authors’ opinion, the agglomerate formation is strictly connected with the appearance of bifilm defects in the casting microstructure. The conducted research shows how an incorrect volume of an additive may have negative influences on the properties of the casting. This is a vital issue not only from a technological point of view, but also for economic reasons.

Desulphurization kinetics of cast iron by alkali—containing mixtures in vacuo

Vacuum ◽  
1967 ◽  
Vol 17 (12) ◽  
pp. 683
Keyword(s):  
Cast Iron ◽  
Kinetics Of

Kinetics of the Formation of Boride Layers on EN-GJL-250 Gray Cast Iron

2017 ◽  
Vol 6 (4) ◽  
pp. 20160077 ◽  
Author(s):  
O. Azouani ◽  
M. Keddam ◽  
O. Allaoui ◽  
A. Sehisseh
Keyword(s):  
Cast Iron ◽  
Gray Cast Iron ◽  
Gray Cast ◽  
Kinetics Of
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