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Study of Abrasive Wear and Abrasion Heating of Mg and Al Matrix Composites Reinforced with B4C and Cr

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Title Study of Abrasive Wear and Abrasion Heating of Mg and Al Matrix Composites Reinforced with B4C and Cr
 
Creator Singh, Sakshi
Chauhan, Nathi Ram
 
Subject Casting
Hardness
Microstructure
Squeezed
stir casting
XRD
 
Description 513-519
This paper has focused on abrasive wear and abrasion heating of Mg- and Al-based B4C and Cr reinforced composites. The B4C and Cr have been added in 5% in the Mg- and Al-matrices and their composites have been fabricated by a squeezed stir casting method. The matrices and composites are evaluated and characterized for microstructure, hardness and X-ray diffraction. The abrasive wear and temperature rise during abrasive wear tests are carried out using a tribo-tester machine. The microstructure of Mg- and Al- matrices and their composites mainly show a uniform distribution of the B4C and Cr reinforcements. The hardness of the composites enhanced upto 72% by including B4C and 30 to 37% in the case of Cr composites in comparison to Mg- and Al- matrices. Temperature rise during abrasive is found more in the case of B4C reinforced composites in comparison to Cr amalgam composites and the abrasive resistance of B4C composite is high in comparison to Cr amalgam composites. The wear rate of boron carbide composites is approximately 2–6 times lower than the Mg matrix under different conditions. SEM image analysis mainly shows the cutting and ploughing material removal mechanism in abrasive wear.
 
Date 2021-08-23T10:37:16Z
2021-08-23T10:37:16Z
2021-06
 
Type Article
 
Identifier 0975-1084 (Online); 0022-4456 (Print)
http://nopr.niscair.res.in/handle/123456789/57922
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source JSIR Vol.80(06) [June 2021]