scholarly journals Effect of Processing Atmosphere and Secondary Operations on the Mechanical Properties of Additive Manufactured AISI 316L Stainless Steel by Plasma Metal Deposition

Metals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1125
Author(s):  
Cristina Arévalo ◽  
Enrique Ariza ◽  
Eva Maria Pérez-Soriano ◽  
Michael Kitzmantel ◽  
Erich Neubauer ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
316L Stainless Steel ◽  
Heating Temperature ◽  
Processing Condition ◽  
Metal Deposition ◽  
Thermal Treatments ◽  
Processing Conditions ◽  
Secondary Operations

Plasma metal deposition (PMD) is an interesting additive technique whereby diverse materials can be employed to produce end parts with complex geometries. This study investigates not only the effects of the manufacturing conditions on the final properties of 316L stainless steel specimens by PMD, but it also affords an opportunity to study how secondary treatments could modify these properties. The tested processing condition was the atmosphere, either air or argon, with the other parameters having previously been optimized. Furthermore, two standard thermal treatments were conducted with the intention of broadening knowledge regarding how these secondary operations could cause changes in the microstructure and properties of 316L parts. To better appreciate and understand the variation of conditions affecting the behavior properties, a thorough characterization of the specimens was carried out. The results indicate that the presence of vermicular ferrite (δ) varied slightly as a consequence of the processing conditions, since it was less prone to appear in specimens manufactured in argon than in air. In this respect, their mechanical properties suffered variations; the higher the ferrite (δ) content, the higher the mechanical properties measured. The degree of influence of the thermal treatment was similar regardless of the processing conditions, which affected the properties based on the heating temperature.

Process Technology and Mechanical Properties of Polylactic Acid Ply Yarns and 316L Stainless Steel Braids

2011 ◽  
Vol 287-290 ◽  
pp. 2656-2659 ◽  
Author(s):  
Ching Wen Lou ◽  
Wen Cheng Chen ◽  
Yueh Sheng Chen ◽  
Shih Peng Wen ◽  
Chin Wei Chang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Mechanical Strength ◽  
Polylactic Acid ◽  
316L Stainless Steel ◽  
Heating Temperature ◽  
Alkali Concentration ◽  
Process Technology ◽  
Surgical Suture ◽  
The Individual

Biodegradable polymer has been widely used in surgical suture, dressing, artificial bone and other bone-related applications. However, when compared with the human cortical bone, the pure polymer obviously did not have enough strength. The present study aimed to give preliminary insights from a pilot study of designing a scaffold of polylactic acid ply yarns composited with stainless steel (SS) braids. To evaluate the fabrication processes and alkali effects on the individual materials, the different heating temperature and alkali treating time and alkali concentration were applied to clarify the changes in mechanical strength. The experimental results showed that the strength was not significant declined with alkali and heating treatments. The retained mechanical strength was kept at 100-120 MPa and ultimately led to bone-like mechanical properties.

Microstructural and Mechanical Characterization of Multipass Friction Stir Processed Al-Mg Alloy

2014 ◽  
Vol 902 ◽  
pp. 18-23
Author(s):  
S. Pradeep ◽  
Vivek Pancholi
Keyword(s):  
Mechanical Properties ◽  
Mechanical Characterization ◽  
Rotation Speed ◽  
Bulk Material ◽  
Processing Condition ◽  
Superplastic Forming ◽  
Traverse Speed ◽  
Processing Conditions ◽  
Friction Stir

In the present investigation friction stir processing (FSP) is carried out using multipass FSP on a 5086 aluminum alloy to modify microstructure and mechanical properties. Two processing conditions P1 and P2 were used, P1 is carried out at constant rotation speed of 1025 rpm and at a traverse speed of 50 mm/min, P2 is carried out at constant rotation speed of 720 rpm and at a traverse speed of 155 mm/min. Inhomogeneous microstructural distribution was observed across the processed zone. EBSD analysis has been done to evaluate the microstructure. Overlapping passes is showing same grain size in the FSPed material. Material processed using P2 processing condition is showing maximum superplastic ductility. The bulk material produced due to multipass FSP seems to be good for superplastic forming applications.

scholarly journals Influence of the Layer Directions on the Properties of 316L Stainless Steel Parts Fabricated through Fused Deposition of Metals

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2493 ◽  
Author(s):  
Takashi Kurose ◽  
Yoshifumi Abe ◽  
Marcelo V. A. Santos ◽  
Yota Kanaya ◽  
Akira Ishigami ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Additive Manufacturing ◽  
316L Stainless Steel ◽  
Low Cost ◽  
The Other ◽  
Processing Conditions ◽  
Direction Parallel ◽  
Tensile Direction ◽  
Fused Deposition

Metal specimens were fabricated via the fused deposition of metals (FDMet) technique with a filament composed of the 316L stainless steel particles and an organic binder. This process was adopted due to its potential as a low-cost additive manufacturing process. The objective of this study is to investigate the influence of the processing conditions—layer directions and layer thicknesses—on the mechanical and shrinkage properties of the metal components. The specimens were printed in three different layer directions. The highest ultimate strength of 453 MPa and strain at break of 48% were obtained in the specimen printed with the layer direction perpendicular to the tensile direction. On the other hand, the specimen printed in the layer direction parallel to the tensile direction exhibited poor mechanical properties. The reason for the anisotropy of the properties was investigated through systematic SEM observations. The observations revealed the presence of segregated binder domains in the filaments. It was deduced that the binder domain was oriented in the direction perpendicular to that of the layer and remained as oriented voids even after sintering. The voids oriented perpendicular to the tensile direction act as defects that could cause stress concentration, thus resulting in poor mechanical properties.

scholarly journals Advanced Characterization of Additively Manufactured 316L Stainless Steel for Nuclear Applications

2021 ◽  
Vol 27 (S1) ◽  
pp. 2160-2161
Author(s):  
Lingfeng He ◽  
Laura Hawkins ◽  
Jingfan Yang ◽  
Xiang Liu ◽  
Miao Song ◽  
...  
Keyword(s):  
Stainless Steel ◽  
316L Stainless Steel ◽  
Advanced Characterization ◽  
Nuclear Applications

Mechanical properties and fracture micromechanisms in 316L stainless steel subjected to ion-plasma treatment with mixture of N, H and Ar gases

2020 ◽  
Author(s):  
Valentina A. Moskvina ◽  
Galina G. Maier ◽  
Kamil N. Ramazanov ◽  
Roman S. Esipov ◽  
Aleksey A. Nikolaev ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Plasma Treatment ◽  
316L Stainless Steel ◽  
Ion Plasma

scholarly journals Mechanical properties and microstructure of 316L stainless steel produced by hybrid manufacturing

2021 ◽  
Vol 290 ◽  
pp. 116970
Author(s):  
Thomas Feldhausen ◽  
Narendran Raghavan ◽  
Kyle Saleeby ◽  
Lonnie Love ◽  
Thomas Kurfess
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
316L Stainless Steel ◽  
Hybrid Manufacturing
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