Direct Metal Laser Sintering of Maraging Steel: Effect of Building Orientation on Surface Roughness and Microhardness. (2018)

• Record Type: Journal Article
• Authors: Bhardwaj, Tarun; Shukla, Mukul
• Is Part Of: Materials today. Volume 5:Number 9(2018)Part 3
• Page Start: 20485
• Page End: 20491
• Publication Date: 2018
• Subjects: Additive Manufacturing -- Maraging Steel -- Direct Metal Laser Sintering -- Surface finish -- Microhardness; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2018.06.425
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: Direct Metal Laser Sintering (DMLS) is a powder bed fusion based Additive Manufacturing (AM) process in which a part is fabricated using layer by layer deposition. In this work, 18% Ni Maraging steel 300 was fabricated using DMLS to examine the variations in surface finish and microhardness using three building orientations i.e. 0˚, 45˚ and 90˚. Surface roughness was found to decrease after 20 mm for 45˚ and 90˚. Correspondingly, microhardness was found to decrease in the building direction. Understanding the effect of building orientation on the surface finish and hardness will allow the producer to fabricate superior quality AM parts with desired properties.