A STUDY OF MICROSTRUCTURE AND WEAR BEHAVIOUR OF TIB2/AL METAL MATRIX COMPOSITES

Authors

  • SREENIVASAN ANJANAPPA SREE KRISHNA INSTITUTE OF TECHNOLOGY
  • VIZHIAN S PAUL UNIVERSITY VISVESVARAYA COLLEGE OF ENGINEERING
  • SHIVAKUMAR NEERAKALLU DASAPPA INDIAN INSTITUTE OF SCIENCE, BANGALORE
  • RAGURAMAN MUNUSAMY UNIVERSITY OF LEEDS, UK

Keywords:

MMC, TIB2 REINFORCED COMPOSITE, SEM AND EDS ANALYSIS

Abstract

TIB2 REINFORCED ALUMINIUM METAL MATRIX COMPOSITES (MMCS) WITH 5, 10 AND 15% WERE MADE BY STIR CASTING TECHNIQUE. EFFECTS OF SLIDING VELOCITY ON THE WEAR BEHAVIOR AND TRIBOCHEMISTRY OF THE WORN SURFACES OF BOTH MATRIX AND COMPOSITES SLIDING AGAINST EN24 STEEL DISC HAVE BEEN INVESTIGATED UNDER DRY CONDITION. A PIN-ON-DISC WEAR TESTING MACHINE WAS USED TO FIND THE WEAR RATE, IN WHICH EN24 STEEL DISC WAS USED AS THE COUNTER FACE, LOADS OF 10-60N IN STEPS OF 10N AND SPEEDS OF 100, 200, 300, 400 AND 500 RPM WERE EMPLOYED. THE RESULTS SHOWED THAT THE WEAR RATE OF BOTH THE MATRIX ALLOY AND MMCS INCREASED WITH INCREASE IN LOAD AND SLIDING SPEEDS. HOWEVER, THE MMCS EXHIBITED LOWER WEAR RATE THAN THE MATRIX ALLOYS. THE RESULTS SHOWED A CRITICAL APPLIED LOAD, AT WHICH THERE EXISTS A TRANSITION FROM MILD TO SEVERE WEAR BOTH IN THE MATRIX ALLOY AND MMCS. THE TRANSITION LOADS FOR THE MMCS WERE MUCH HIGHER THAN THAT OF THE MATRIX ALLOY. THE TRANSITION LOADS INCREASED WITH THE INCREASE IN TIB2, BUT DECREASE WITH THE INCREASE IN SLIDING SPEEDS. THE SEM AND EDS ANALYSES WERE UNDERTAKEN TO CLARIFY THE EFFECT OF TIB2 PARTICLES ON THE WEAR MECHANISM FOR EACH CONDITION. 

Author Biographies

SREENIVASAN ANJANAPPA, SREE KRISHNA INSTITUTE OF TECHNOLOGY

PROFESSOR OF MECHANICAL ENGINEERING

VIZHIAN S PAUL, UNIVERSITY VISVESVARAYA COLLEGE OF ENGINEERING

PROFESSOR OF MECHANICAL ENGINEERING

SHIVAKUMAR NEERAKALLU DASAPPA, INDIAN INSTITUTE OF SCIENCE, BANGALORE

SENIOR SCIENTIFIC OFFICER

CENTRE FOR PRODUCT DESIGN AND MANUFACTURING

RAGURAMAN MUNUSAMY, UNIVERSITY OF LEEDS, UK

RESEARCH FELLOW

SCHOOL OF MECHANICAL ENGINEERING

Downloads

Additional Files

Published

2011-03-22

Issue

Section

Articles