Analysis of High-Power Diode Laser Heating Effects on HY-80 Steel for Laser Assisted Friction Stir Welding Applications

Autor:	Alexander M. Rubenchik, Manyalibo J. Matthews, Sheldon Wu, Raymond J. Beach, B.W. Baker, Maxwell E. Wiechec, Terry R. McNelley, Mark D. Rotter
Rok vydání:	2017
Předmět:	Materials science Metallurgy Laser beam welding 02 engineering and technology Welding 021001 nanoscience & nanotechnology Laser 020501 mining & metallurgy law.invention 0205 materials engineering law Martensite HY-80 Vickers hardness test Friction stir welding 0210 nano-technology Diode
Zdroj:	World Journal of Engineering and Technology. :97-112
ISSN:	2331-4249 2331-4222
DOI:	10.4236/wjet.2017.51009
Popis:	In this research, several conditions of high power diode laser heated HY-80 steel were characterized to determine the viability of using such lasers as a preheating source before friction stir welding in order to reduce frictional forces thereby reducing tool wear and increasing welding speeds. Differences in microstructures within heat affected zones were identified at specific laser powers and traverse speeds. Vickers hardness values were recorded and analyzed to validate the formation of additional martensite in diode laser heated regions of HY-80 steel. Conditions that produced little to no additional martensite were identified and relationships among high power diode laser power, traverse speed, and martensite formation were determined. The development of heat affected zones, change in grain structure, and creation of additional martensite in HY-80 can be prevented through the optimization of laser amperage and transverse speed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ea04c5029ee3dcfb0578c3cb46aa24c1 https://doi.org/10.4236/wjet.2017.51009 Zobrazit plný text záznamu