Iranian Journal of Materials Science and Engineering
Iran University of Science & Technology
Mon, Nov 4, 2024
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Volume 5, Issue 1 (winter 2008 2008)
IJMSE 2008, 5(1): 29-36 |
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M. Kazemi pour, S. Sharafi. THE EFFECT OF HEAT TREATMENT ON ABRASIVE WEAR RESISTANCE OF Fe-34Cr-4.5C%WT HARDFACING ALLOY. IJMSE 2008; 5 (1) :29-36
URL: http://ijmse.iust.ac.ir/article-1-128-en.html
URL: http://ijmse.iust.ac.ir/article-1-128-en.html
Abstract: (34312 Views)
Abstract: Hardfacing is one of the most useful and economical ways to increase the service life of
components subjected to abrasive wear. Iron based hardfacing alloys have long been considered
as candidate coatings for wear-resistant applications in industry. In the present work two layer of
Fe-34Cr-4.5C%wt hardfacing alloy was deposited on ASTM A36 carbon steel plates by SMAW
method. The microstructure consists of large primary and eutectic M7C3 carbides, metastable
austenite and small amount of secondary carbides. The microstructure was analyzed by optical
and scanning electron microscopes. In the same condition of size, shape, distribution and volume
fraction of carbides the as-welded matrix changed to martensite, tempered martensite and ferrite
by heat treatment processes. The wear resistance was measured by pin-on-disk method under loads
of 5, 10 and 20N and for sliding distance of 1500m. The results showed that the as-welded sample
with austenitic matrix has the most and the ferritic matrix specimen has the least wear resistance.
The predominate mechanisms for mass losses were determined to be micro-cutting, microploughing.
Type of Study: Research Paper |
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