Transmission electron microscopy of high pressure metal dusted 316 stainless steel

2004 ◽  
Vol 385 (1-2) ◽  
pp. 292-299 ◽  
Author(s):  
K STEVENS ◽  
T LEVI ◽  
I MINCHINGTON ◽  
N BRIGGS ◽  
V KEAST ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
High Pressure ◽  
Stainless Steel ◽  
316 Stainless Steel ◽  
Transmission Electron

Synthesis and Characterization of Nanocrystalline 316-Stainless Steel Coatings by High Velocity Oxy-Fuel Spraying

1998 ◽  
Author(s):  
M.L. Lau ◽  
H.G. Jiang ◽  
E.J. Lavernia
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Grain Size ◽  
Stainless Steel ◽  
High Velocity ◽  
Polished Surface ◽  
316 Stainless Steel ◽  
Transmission Electron ◽  
Average Grain Size ◽  
Stainless Steel Coatings

Abstract The present paper describes the synthesis of nanocrystalline 316-stainless steel coatings by high velocity oxy-fuel (HVOF) thermal spraying. The feedstock powders were synthesized by mechanical milling to produce flake-shaped agglomerates with an average grain size of less than 100 nm. The powders were introduced into the HVOF spray to successfully produce nanocrystalline coatings. X-ray diffraction analysis and transmission electron microscopy were used to determine the average grain size of the milled powders. Scanning electron microscopy and transmission electron microscopy were used to study the morphology of the nanometric particles and the microstructure of the as-sprayed coatings. The properties of various coating materials were characterized by microhardness measurements performed on the polished surface of the cross section.

Dislocations and stacking faults in stainless steel

1957 ◽  
Vol 240 (1223) ◽  
pp. 524-538 ◽  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Stainless Steel ◽  
Grain Boundaries ◽  
Stacking Faults ◽  
Stacking Fault ◽  
Stacking Fault Energy ◽  
Thin Sections ◽  
Partial Dislocations ◽  
Transmission Electron

Further experiments by transmission electron microscopy on thin sections of stainless steel deformed by small amounts have enabled extended dislocations to be observed directly. The arrangement and motion of whole and partial dislocations have been followed in detail. Many of the dislocations are found to have piled up against grain boundaries. Other observations include the formation of wide stacking faults, the interaction of dislocations with twin boundaries, and the formation of dislocations at thin edges of the foils. An estimate is made of the stacking-fault energy from a consideration of the stresses present, and the properties of the dislocations are found to be in agreement with those expected from a metal of low stacking-fault energy.

Crystal structures of high-pressure phases formed in Si by laser irradiation

Microscopy ◽  
2018 ◽  
Vol 67 (1) ◽  
pp. 30-36
Author(s):  
Hiroyuki Iwata ◽  
Daisuke Kawaguchi ◽  
Hiroyasu Saka
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
High Pressure ◽  
Laser Beam ◽  
Crystal Structures ◽  
Laser Irradiation ◽  
Pulse Laser ◽  
Transmission Electron ◽  
Micro Cracks ◽  
Pressure Phase

Abstract Internal modification induced in Si by a permeable pulse laser was investigated by transmission electron microscopy. A laser induced modified volume (LIMV) was a cylindrical rod along the track of a laser beam with the head at the focus of the laser beam. In the LIMV, beside voids, dislocations, micro-cracks and what had been supposed to be an unidentified high-pressure phase (hpp) of Si were observed in LIMV. The so-called ‘hpp’ was identified mostly as diamond Si.

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