Abstract
There were described results of investigations of microstructure and micro hardness of surface layer of collar step on disk plate from powder pseudo alloy steel – copper after carrying out of laser thermal treatment by fiber laser with capacity of 1 kW. There was revealed that under laser thermal treatment of pseudo alloy steel – copper except of full melting zone is developed field of partial flashing, that occurred in the volumes of low-melting component (cop- per) in parent structure and contacting sites of steel matrix. Then followed zone of quenching from solid state, in which for better samples was reached maximum micro hardness up 1000 HV in the volume of martensite, forming in perlite colony of initial material steel – copper.
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Schedule a callMore From: Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional’nye Pokrytiya (Proceedings of Higher Schools. Powder Metallurgy аnd Functional Coatings)
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