THE EFFECT OF HEAT TREATMENT ON ABRASIVE WEAR RESISTANCE OF Fe-۳۴Cr-۴.۵C%WT HARDFACING ALLOY
Publish Year: 1386
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJMSEI-5-1_005
تاریخ نمایه سازی: 26 مرداد 1402
Abstract:
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-۳۴Cr-۴.۵C%wt hardfacing alloy was deposited on ASTM A۳۶ carbon steel plates by SMAW
method. The microstructure consists of large primary and eutectic M۷C۳ 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 ۵, ۱۰ and ۲۰N and for sliding distance of ۱۵۰۰m. 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.
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