scholarly journals A Short Review on Cellular Structure Design and Selective Laser Melting using Bio-compatible Ti6Al4V Material

2020 ◽  
Vol 27 (1) ◽  
Author(s):  
Jeng Ywan Jeng
Keyword(s):  
Selective Laser Melting ◽  
Cellular Structure ◽  
Short Review ◽  
Structure Design ◽  
Laser Melting

scholarly journals Fracture behavior of cellular structures obtained by selective laser melting

2020 ◽  
pp. 35-47
Author(s):  
I. S. Kamantsev ◽  
◽  
Yu. N. Loginov ◽  
S. V. Belikov ◽  
S. I. Stepanov ◽  
...  
Keyword(s):  
Cyclic Loading ◽  
Selective Laser Melting ◽  
Fatigue Fracture ◽  
Fracture Resistance ◽  
Cellular Structure ◽  
Fracture Behavior ◽  
Cellular Structures ◽  
Laser Melting ◽  
Cellular Architecture ◽  
Fatigue Fracture Resistance

An example of samples with a cellular architecture, obtained by selective laser melting, is used to study the influence of the building direction of cellular objects on the characteristics of fracture under cyclic loading. The origin of their fracture has been revealed. The mechanism providing increased fatigue fracture resistance of objects which, along with the cellular structure, have anisotropy of properties due to the technological features of their production has been determined.

Porous structure design and fabrication of metal-bonded diamond grinding wheel based on selective laser melting (SLM)

2018 ◽  
Vol 100 (5-8) ◽  
pp. 1451-1462 ◽  
Author(s):  
Chenchen Tian ◽  
Xuekun Li ◽  
Shubo Zhang ◽  
Guoqiang Guo ◽  
Stephan Ziegler ◽  
...  
Keyword(s):  
Porous Structure ◽  
Selective Laser Melting ◽  
Structure Design ◽  
Grinding Wheel ◽  
Laser Melting ◽  
Diamond Grinding Wheel ◽  
Diamond Grinding

scholarly journals Structure and properties of corrosion-resistant steel obtained by selective laser melting

2019 ◽  
pp. 91-97
Author(s):  
A. A. Smetkin ◽  
S. A. Oglezneva ◽  
K. V. Kalinin ◽  
E. F. Khanipov
Keyword(s):  
Selective Laser Melting ◽  
Cellular Structure ◽  
Structural Parameters ◽  
Heat Removal ◽  
Steel Powder ◽  
Coherent Scattering ◽  
12Kh18n10t Steel ◽  
Laser Melting ◽  
Differential Distribution ◽  
Gaussian Form

The objects of study were stainless steel powder 12Kh18N10T of the 20–63 μm fraction and experimental samples obtained on the basis of it by selective laser melting (SLM). The powder was obtained by spraying with argon at a temperature of 1640 °C and a pressure of 27 bar. The particles have the dendritic-cellular structure, with a decrease in their size (<35 μm), the cellular structure prevails, and the dendritic one almost disappears. The distinctive particle size is d50 = 37 μm, d100 = 67 μm. The differential distribution curve is close to the Gaussian form, and asymmetry is associated with satellite and the presence of a small number of particles less than 20 microns in size. The fluidity of the powder was 3,27 g/s, and the bulk density was 4,41 g/cm3. The density of the 12Kh18N10T steel samples grown at the Concept Laser M2 facility with a laser power of 180 W and a speed of 700 mm/s averaged 7,89 g/cm3. Since the density of compact steel is 7,95 g/cm3, the obtained material has enough high density. The microstructure of the 12Kh18N10T sample was described by continuity, the absence of pores and cracks. It was a solid solution of austenite. The average size of coherent scattering regions in the grain volume was 19 nm. The observed arcuate boundaries of parallel semicircular tracks are due to heat removal during crystallization through SLM. The elongated crystallites in the tracks are oriented inward from this boundary. The microhardness of the samples in the transverse plane of the thin section is higher than the microhardness of the planar plane. But the microhardness of the samples obtained from the powder by the SLM is higher than that of the standard compact alloy. Tensile strength and elongation are 651 MPa and 47 %, respectively. The increase in strength is probably due to the grinding of structural parameters in SLM. The fracture surface of the samples is characterized by a pronounced viscous type.

On the microstructure and tensile properties of Inconel 718 alloy fabricated by selective laser melting and conventional casting

2021 ◽  
Author(s):  
Minglin He ◽  
Yong Ni ◽  
Shuai Wang
Keyword(s):  
Tensile Properties ◽  
Selective Laser Melting ◽  
Inconel 718 ◽  
Cellular Structure ◽  
Cast Alloy ◽  
Grain Structure ◽  
Laser Melting ◽  
Inconel 718 Alloy ◽  
Laves Phases ◽  
Conventional Casting

In this work, we investigated the microstructure and tensile properties of Inconel 718 alloy processed by selective laser melting (SLM) and conventional casting technique using multiscale characterization methods. Results indicated that a columnar grain structure containing cellular structure units with submicron size was the major feature in the as-printed Inconel 718 alloy. At the cellular structure boundaries, the high-density dislocation tangles, segregation of Nb/Mo atoms and nano-sized Laves phases were found. Meanwhile, we also observed dislocation pile-ups and stacking faults in the interior of the cellular structure. In contrast, in the as-cast Inconel 718 alloy, both the grains and Laves phases were much coarser. Discrete dislocations, dislocation tangles and [Formula: see text]” precipitates were locally observed in the grains. Tensile results showed the as-printed Inconel 718 alloy had a higher strength and a lower elongation in comparison with those in the as-cast alloy. Based on the experimental results, the formation mechanism of the cellular structure was discussed.

Thermal stability of the cellular structure of an austenitic alloy after selective laser melting

2016 ◽  
Vol 2016 (5) ◽  
pp. 424-430 ◽  
Author(s):  
K. O. Bazaleeva ◽  
E. V. Tsvetkova ◽  
E. V. Balakirev ◽  
I. A. Yadroitsev ◽  
I. Yu. Smurov
Keyword(s):  
Thermal Stability ◽  
Selective Laser Melting ◽  
Cellular Structure ◽  
Laser Melting ◽  
Austenitic Alloy ◽  
Thermal Stability Of

scholarly journals A Short Review on Thermal Treatments of Titanium & Nickel Based Alloys Processed by Selective Laser Melting

2021 ◽  
Author(s):  
Mehmet Erdi Korkmaz ◽  
Munish Kumar Gupta ◽  
Saad Waqar ◽  
Mustafa Kuntoğlu ◽  
Grzegorz M. Krolczyk ◽  
...  
Keyword(s):  
Selective Laser Melting ◽  
Short Review ◽  
Thermal Treatments ◽  
Laser Melting ◽  
Titanium Nickel
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