Using a Trial Sample on Stainless Steel 316L in a Direct Laser Deposition Process

Artur Vildanov,Konstantin Babkin,Gleb Turichin,Andrey Arkhipov,Ruslan Mendagaliyev

doi:10.3390/met11101550

Abstract

Direct laser deposition technology is used for the manufacture of large-size products with complex geometries. As a rule, trial samples with small dimensions are made to determine the deposition parameters. In order for the resulting products to have the required performance characteristics, it is necessary to minimize the number of internal macrodefects. Non-fusion between the tracks are defects that depend on the technological mode (power, speed, track width, etc.). In this work, studies have been carried out to determine the power level at which non-fusion is formed, dwell time between the tracks on the model samples. This paper considers the issue of transferring the technological parameters of direct laser deposition from model samples to a large-sized part, and describes the procedure for making model samples.

Highlights

With the introduction of direct laser deposition technology in various industries, the requirements for manufactured products are growing [1,2,3]
TFhigeumrei7crionsvterustcitguartedisthaefimniecrcoesltlruulactrusrualbfsetarutucrteusreo.f tThheesasammpplelsesweitxhhiabpitaausceoomf p2l.5ex cmelilnu.lar microstructure and small sub-grains (Figure 7), typical of samples obtained by direct laser deposition, which are the result of rapid solidification
The samples exhibit a complex cellular microstructure and small sub-grains (Figure 7), typical of samples obtained by direct laser deposition, which are the result of rapid solidification

Summary

Introduction

With the introduction of direct laser deposition technology in various industries, the requirements for manufactured products are growing [1,2,3]. Metals 2021, 11, 1550 information, it is necessary to understand that the thermal histories of a large2-soifz1e0d product and a technological sample of small dimensions will be completely different. The dwell time was 5 m pause between the layers imitates a very large product, the most aggressive the tracks formation, and favorable conditions for non-fusion.

Results

Conclusion