Effect of Ion Irradiation on Dislocation Processes in Stainless Steel

2011 ◽  
Vol 1363 ◽  
Author(s):  
Josh Kacher ◽  
Grace S. Liu ◽  
May Martin ◽  
I.M. Robertson
Keyword(s):  
Stainless Steels ◽  
Ion Irradiation ◽  
Electron Tomography ◽  
Austenitic Stainless Steels ◽  
Dislocation Motion ◽  
Irradiation Damage ◽  
Dislocation Generation ◽  
Transmission Electron ◽  
First Time

ABSTRACTThe effects of ion irradiation damage on dislocation generation and propagation in austenitic stainless steels were studied by means of in situ transmission electron microscopy and electron tomography. Tensile samples were irradiated in situ to a dose on the order of 1017 ions/m2 with 1MeV Kr+ and strained at 300 K as well as 673 K. Dislocation motion through the irradiation-obstacle field was jerky and discontinuous, dislocation pile-ups formed in grain interiors and at boundaries, long straight dislocations were generated decorating the channel-matrix walls, and dislocation cross-slip within the channel created debris along the channel leading to channel widening. Electron tomography was applied for the first time to reveal new detail about the dislocation reactions in the channel wall.

TEM, XRD and nanoindentation characterization of Xenon ion irradiation damage in austenitic stainless steels

2014 ◽  
Vol 454 (1-3) ◽  
pp. 168-172 ◽  
Author(s):  
H.F. Huang ◽  
J.J. Li ◽  
D.H. Li ◽  
R.D. Liu ◽  
G.H. Lei ◽  
...  
Keyword(s):  
Stainless Steels ◽  
Ion Irradiation ◽  
Austenitic Stainless Steels ◽  
Irradiation Damage

scholarly journals In Situ and Electron Tomography Observations of Dislocation-Defect Interactions in Ion Irradiated Austenitic Stainless Steels

2011 ◽  
Vol 17 (S2) ◽  
pp. 446-447
Author(s):  
J Kacher ◽  
G Liu ◽  
I Robertson
Keyword(s):  
Stainless Steels ◽  
Electron Tomography ◽  
Austenitic Stainless Steels ◽  
Dislocation Defect ◽  
Defect Interactions

Extended abstract of a paper presented at Microscopy and Microanalysis 2011 in Nashville, Tennessee, USA, August 7–August 11, 2011.

scholarly journals Direct TEM observation of the “acanthite α-Ag2S–argentite β-Ag2S” phase transition in a silver sulfide nanoparticle

2019 ◽  
Vol 1 (4) ◽  
pp. 1581-1588 ◽  
Author(s):  
S. I. Sadovnikov ◽  
E. Yu. Gerasimov
Keyword(s):  
Electron Microscopy ◽  
Phase Transition ◽  
Transmission Electron Microscopy ◽  
Silver Sulfide ◽  
Transmission Electron ◽  
Silver Sulfide Nanoparticles ◽  
Microscopy Method ◽  
Electron Microscopy Method ◽  
First Time

For the first time, the α-Ag2S (acanthite)–β-Ag2S (argentite) phase transition in a single silver sulfide nanoparticles has been observed in situ using a high-resolution transmission electron microscopy method in real time.

Electron irradiation damage in austenitic stainless steels

1991 ◽  
Vol 179-181 ◽  
pp. 526-528 ◽  
Author(s):  
Jiguang Sun ◽  
Jiapu Qian ◽  
Zhuoyong Zhao ◽  
Jiming Chen ◽  
Zengyu Xu
Keyword(s):  
Electron Irradiation ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Irradiation Damage

scholarly journals In situ TEM observations of ion irradiation damage in boron carbide

2019 ◽  
Vol 39 (4) ◽  
pp. 726-734 ◽  
Author(s):  
Guillaume Victor ◽  
Yves Pipon ◽  
Nathalie Moncoffre ◽  
Nicolas Bérerd ◽  
Claude Esnouf ◽  
...  
Keyword(s):  
Boron Carbide ◽  
Ion Irradiation ◽  
Irradiation Damage ◽  
In Situ Tem

scholarly journals Automated cryo-lamella preparation for high-throughput in-situ structural biology

2019 ◽  
Author(s):  
Genevieve Buckley ◽  
Gediminas Gervinskas ◽  
Cyntia Taveneau ◽  
Hari Venugopal ◽  
James C. Whisstock ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Structural Biology ◽  
Focused Ion Beam ◽  
Electron Tomography ◽  
Ion Beam ◽  
Automated Method ◽  
Cellular Environment ◽  
Transmission Electron

AbstractCryo-transmission electron tomography (cryo-ET) in association with cryo-focused ion beam (cryo-FIB) milling enables structural biology studies to be performed directly within the cellular environment. Cryo-preserved cells are milled and a lamella with a thickness of 200-300 nm provides an electron transparent window suitable for cryo-ET imaging. Cryo-FIB milling is an effective method, but it is a tedious and time-consuming process, which typically results in ~10 lamellae per day. Here, we introduce an automated method to reproducibly prepare cryo-lamellae on a grid and reduce the amount of human supervision. We tested the routine on cryo-preserved Saccharomyces cerevisiae and demonstrate that this method allows an increased throughput, achieving a rate of 5 lamellae/hour without the need to supervise the FIB milling. We demonstrate that the quality of the lamellae is consistent throughout the preparation and their compatibility with cryo-ET analyses.

Metastable Phase Formation in the Y-TI System by Ion Mixing

1991 ◽  
Vol 235 ◽  
Author(s):  
S. L. Lai ◽  
Z. J. Zhang ◽  
J. R. Ding ◽  
B. X. Liu
Keyword(s):  
Metastable Phase ◽  
Heat Of Formation ◽  
Crystalline Lattice ◽  
Vacuum Furnace ◽  
Multilayered Films ◽  
Glass Forming ◽  
Transmission Electron ◽  
Metastable Phase Formation ◽  
First Time

ABSTRACTAmorphization behavior was studied for the Y-Ti system, which has rather positive heat of formation being around + 22 kJ/mol, by room temperature 360 keV xenon ion mixing of YxTi100−xmultilayered films to various doses, ranging from 7×1014 to 1×1016 xe/cm2 Single and uniform amorphous phase was obtained in a narrow composition region, i.e. x=65 to 75, after ion mixing to the relevant doses. Moreover, a metastable fee crystalline Y-Ti phase was observed, for the first time, in this system. The crystalline lattice constant of the metastable phase was determined to be 4.012 Å. The re-crystallization temperature of the formed amorphous alloy was found out to be 600°C by in situ transmission electron microscope annealing as well as by vacuum furnace experiments. Possible interpretation is also discussed by comparing the experimental results with those proposed models for predicting glass forming ability.

Sign in / Sign up

Export Citation Format

Share Document