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Title

Investigating the Effect of Titanium Addition on the Microstructure and Mechanical Properties of Ni-Hard 4 Cast Iron

Year: 1395
COI: JR_MPMPJ-5-1_002
Language: EnglishView: 89
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Authors

Masoud Bahrami Alamdarlo - Young Researchers and Elite Club, Najafabad Branch, Islamic Azad University, Najafabad, Iran
Kamran Amini - Department of Mechanical Engineering, Tiran Branch, Islamic Azad University, Isfahan, Iran
Vahid Nemati Najafabadi - Young Researchers and Elite Club, Najafabad Branch, Islamic Azad University, Najafabad, Iran
Mahyar Mohammadnezhad - Department of Materials Engineering, Isfahan University of Technology, Isfahan, Iran

Abstract:

Ni-Hard4 white cast iron is excellent wear resistant material and has been widely used in wearaffected equipment operated under extreme conditions, such as in mineral processing, cement, copper and iron manufacturing. In this study the effect of titanium addition (1.2, 0.7 and 0.2 wt.%) to the Ni-hard 4 cast iron with the nominal composition of Si= 1.5%, Mn=0.5%, C=3%, P=0.05%, S= 0.05%, Mo= 0.1%, Cr= 8% and Ni= 5.5% was investigated. This study was focused on the hardness, tensile strength, wear resistance and microstructural changes of the Ni-hard 4 cast iron. The results were compared with the Ni-hard 4 titanium free cast iron and demonstrated that the carbide morphology changes from rough plane to the flower leaf due to titanium addition. In addition, results showed that by increasing the percentage of titanium, hardness, strength and wear resistance is improved. In the samples with 1.3% titanium, the hardness, strength and wear resistance improved for 35, 22.5 and 85% respectively as compared with the titanium-free samples. This behavior is a consequence of the chromium carbide replacement with the hard titanium carbides as well as grain refining. Investigating the worn out surface of the samples showed that the predominant wear mechanism is the combination of the adhesive and tibo-chemical.

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This Paper COI Code is JR_MPMPJ-5-1_002. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/1146274/

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Bahrami Alamdarlo, Masoud and Amini, Kamran and Nemati Najafabadi, Vahid and Mohammadnezhad, Mahyar,1395,Investigating the Effect of Titanium Addition on the Microstructure and Mechanical Properties of Ni-Hard 4 Cast Iron,https://civilica.com/doc/1146274

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Type of center: Azad University
Paper count: 9,699
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