Microstructure and Properties of 316 Stainless Steel Produced by Laser-Induced Arc Hybrid Additive Manufacturing

2019 ◽  
Vol 46 (12) ◽  
pp. 1202006
Author(s):  
李旭文 Li Xuwen ◽  
宋刚 Song Gang ◽  
张兆栋 Zhang Zhaodong ◽  
刘黎明 Liu Liming
Keyword(s):  
Stainless Steel ◽  
Additive Manufacturing ◽  
Microstructure And Properties ◽  
316 Stainless Steel

Microstructure and Properties of 304 Stainless Steel Specimen Manufactured by Cold Metal Transfer + Pulse Composite Arc Additive

2021 ◽  
Vol 13 (1) ◽  
pp. 152-160
Author(s):  
Yanjie Wang ◽  
Xuru Hou ◽  
Lin Zhao ◽  
Yun Peng ◽  
Chengyong Ma ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Additive Manufacturing ◽  
Fracture Surface ◽  
Steel Specimen ◽  
Corrosion Current ◽  
Electrochemical Analysis ◽  
304 Stainless Steel ◽  
Cold Metal Transfer ◽  
Σ Phase ◽  
Microstructure And Properties

304 stainless steel test block was fabricated by continuous melting wire with CMT and pulse mixed mode, and the path of additive manufacturing is layered slice S-shaped. The relationship between microstructure and properties of the specimen was investigated by microscope, SEM, EBSD, XRD, tensile, impact and electrochemical experiments. The results show that molding between weld and weld is very good, and the microstructure is mainly Austenite, Ferrite and a little of σ, and there are three kinds of Ferrite morphology: cellular, wormlike and lath. σ phase precipitates easily in regions with high ferrite content and is distributed at the boundary between austenite and ferrite. The specimen has good low temperature toughness. The microscopic fracture surface is mainly dimple, and the precipitates in the fracture surface are mainly fine carbide particles. The tensile strength of the additive manufacturing 304 specimen is higher than the forged specimen, and the type of fracture is ductile fracture. The electrochemical analysis of 304 stainless steel specimens and forgings shows that CMT and pulse arc additive manufacturing specimen has excellent corrosion resistance and its corrosion current is slightly lower than the forging.

scholarly journals Joining of Inconel 718 and 316 Stainless Steel using electron beam melting additive manufacturing technology

2016 ◽  
Vol 94 ◽  
pp. 17-27 ◽  
Author(s):  
Alejandro Hinojos ◽  
Jorge Mireles ◽  
Ashley Reichardt ◽  
Pedro Frigola ◽  
Peter Hosemann ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Electron Beam ◽  
Additive Manufacturing ◽  
Inconel 718 ◽  
Electron Beam Melting ◽  
Manufacturing Technology ◽  
316 Stainless Steel ◽  
Additive Manufacturing Technology

The effect of low-power laser on micro-forming of 316 stainless steel additive manufacturing part

2021 ◽  
Vol 68 ◽  
pp. 583-601
Author(s):  
Zhaodong Zhang ◽  
Zongyu Li ◽  
Yajing He ◽  
Gang Song ◽  
Liming Liu
Keyword(s):  
Stainless Steel ◽  
Additive Manufacturing ◽  
Low Power ◽  
Micro Forming ◽  
Power Laser ◽  
316 Stainless Steel

scholarly journals Microbial-Induced Corrosion of 3D-Printed Stainless Steels: A Surface Science Investigation

2021 ◽  
Vol 6 (1) ◽  
pp. 9
Author(s):  
Brianna L. Young ◽  
Jamie S. Quinton ◽  
Sarah L. Harmer
Keyword(s):  
Stainless Steel ◽  
Additive Manufacturing ◽  
Metal Deposition ◽  
Passivation Layer ◽  
Manufacturing Processes ◽  
Laser Metal Deposition ◽  
Manufacturing Method ◽  
316 Stainless Steel ◽  
First Choice ◽  
Corrosive Resistance

Stainless steel is a material manufactured for its high corrosive resistance and is the first choice of material in a range of applications. Microbial-induced corrosion can cause significant damage to metals and is responsible for approximately 20% of corrosive damage. The corrosive resistance of stainless steel is reduced during manufacturing processes, including welding or joining methods, as the connection points prevent the metal from reforming its passivation layer. Additive manufacturing processes allow for intricate designs to be produced without the need for welding or bolts. However, it is unknown how the layering method of additive manufacturing (AM) will affect stainless steel’s passivation layer and, in turn, its corrosive resistance. This research compares the corrosive resistance of 316L stainless steel produced using laser metal deposition and traditionally manufactured AISI 316 stainless steel to determine how the layering manufacturing method affects the corrosive resistance of the material. Samples are incubated over a 21-day period with Acidithiobacillus ferrooxidans (A.f) and Leptospirillum ferooxidans (L.f) in a modified HH medium with an approximate pH of 1.8 and kept at a constant temperature of 30 °C. Scanning electron microscopy and Auger electron spectroscopy surface analysis techniques are used to identify any corrosive processes on the surface of the samples. This research is an introductory analysis of the corrosive resistance of AM 316 stainless steel using the laser metal deposition technique. The results show how stainless steel produced using laser metal deposition will react in acidic environments and are used to determine if it could be used in conjunction with other materials in underground pipes for acidic soils.

Use of ultrasound to identify microstructure-property relationships in 316 stainless steel fabricated with binder jet additive manufacturing

2022 ◽  
pp. 102591
Author(s):  
Nancy Huang ◽  
Olivia J. Cook ◽  
Robert L.W. Smithson ◽  
Christopher M. Kube ◽  
Andrea P. Argüelles ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Additive Manufacturing ◽  
316 Stainless Steel

scholarly journals Mechanical Properties of 316 Stainless Steel Structure produced by Pulsed Micro-plasma Additive Manufacturing

2021 ◽  
Author(s):  
Xiaojing Yuan ◽  
Ning Guan ◽  
Xuping Wang ◽  
Hao Li ◽  
Jin Li ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Stainless Steel ◽  
Additive Manufacturing ◽  
Microstructural Analysis ◽  
Pulse Length ◽  
Micro Hardness ◽  
Heat Accumulation ◽  
Growth Orientation ◽  
316 Stainless Steel ◽  
Thin Walled

Abstract An innovative pulsed micro-plasma additive manufacturing (AM) system is proposed for the fabrication of thin-walled 316 stainless steel parts. During the deposition process, the heat accumulation from the micro-plasma can be controlled effectively by adjusting the following parameters: the AM current, pulse length of the plasma arc, and scanning speed. The width of the pool can reach 3.0 mm. The microstructural analysis, micro-hardness tests, and tensile strength tests were performed. The results of the structural characterisation showed that columnar dendrites predominated in the microstructure of thin-walled elements and exhibited epitaxial growth from the bottom to the top and from the middle to both sides, while the top grains had more variations in growth orientation. The grains had a core-shell structure with a growth orientation along the < 100 > direction of the austenite structure, and the boundary was composed of migrated C and Cr. The micro-hardness of the thin-walled structure (240–320 Hv0.3) decreased with increasing the deposition thickness. The tensile strength and yield strength of the thin-walled parts were 669 and 475 MPa, respectively. The fracture mechanism was that cracks formed along the pores along the pores of the grain boundary and then propagated along them, ultimately leading to the fracture.

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