LASER MACROPOLISHING OF ADDITIVELY MANUFACTURED PARTS OF MARAGING STEEL WITH RESPECT TO SURFACE PROPERTIES

Autor:	Miroslav Zetek
Rok vydání:	2022
Předmět:	Mechanical Engineering Automotive Engineering Electrical and Electronic Engineering Industrial and Manufacturing Engineering
Zdroj:	MM Science Journal. 2022:5918-5925
ISSN:	1805-0476 1803-1269
Popis:	This article is focused on the laser macro polishing of additively manufactured (AM) parts. The material that is being processed is maraging steel (MS1). The main part of the study is to find suitable parameters to significantly reduce the surface roughness of 3 surfaces with completely different topologies. The investigated parameters are scanning speed, defocussed laser and laser power. However, other material properties are also tested. Fatigue life, tensile and hardness testing were carried out for 3 different sets of laser macro polishing parameters. It was found that surface roughness reduction of Ra by over 90 % is possible. Interestingly, tensile testing of parameters 1 and 2 showed more brittle-like behaviour in comparison to parameter 3. This was further supported by hardness testing, which showed increased hardness in the centre of the samples.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::82510b68b98d71c7106829e5a8d98717 https://doi.org/10.17973/mmsj.2022_10_2022125 Zobrazit plný text záznamu