Surface formation mechanisms in selective laser melting of cobalt-chromium-molybdenum powder

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

Аннотация

Selective laser melting (SLM) is a manufacturing technology of metal parts of any shapes with target mechanical properties by means of laser melting. This paper discusses the effect of SLM parameters: laser output power, laser movement velocity, scanning pitch and preheating temperature of a powdered material on surface formation mechanism, namely, its physical configuration when melting cobalt-chromium-molybdenum powdered material Со28Cr3Mo. The study points at structural differences of melted surfaces even under identical process parameters. Several types of surface formation are identified, e.g. homogenous melt, coagulated particles, and shapeless particles. Vapor pressure, Marangoni effect, and heat effect of a melted powder are stated to be key reasons for rough surface. This research is of high importance for understanding the effect of SLM parameters on formation of a target quality surface, positive stability and repeatable accuracy of the process.

Язык оригиналаАнглийский
Название основной публикацииProblems and Prospects for the Development of Materials Science
РедакторыAlexander Saprykin
ИздательTrans Tech Publications Ltd
Страницы73-78
Число страниц6
ISBN (печатное издание)9783035716764
DOI
СостояниеОпубликовано - 2020
СобытиеInternational Scientific and Practical Conference on Materials Science, Mechanical Engineering and Energy: Problems and Prospects for Development, MSMEE 2019 - Barnaul, Российская Федерация
Продолжительность: 27 июн 201928 июн 2019

Серия публикаций

НазваниеKey Engineering Materials
Том839 KEM
ISSN (печатное издание)1013-9826
ISSN (электронное издание)1662-9795

Конференция

КонференцияInternational Scientific and Practical Conference on Materials Science, Mechanical Engineering and Energy: Problems and Prospects for Development, MSMEE 2019
СтранаРоссийская Федерация
ГородBarnaul
Период27.6.1928.6.19

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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