Version 1
: Received: 11 October 2020 / Approved: 12 October 2020 / Online: 12 October 2020 (16:55:14 CEST)
Version 2
: Received: 11 January 2023 / Approved: 11 January 2023 / Online: 11 January 2023 (09:00:32 CET)
How to cite:
Rafique, M.M.A. Plasma Facing Material by Self-Interstitial Solid Solution Strengthening – Problem, Proposition, and a Solution. Preprints2020, 2020100258. https://doi.org/10.20944/preprints202010.0258.v1
Rafique, M.M.A. Plasma Facing Material by Self-Interstitial Solid Solution Strengthening – Problem, Proposition, and a Solution. Preprints 2020, 2020100258. https://doi.org/10.20944/preprints202010.0258.v1
Rafique, M.M.A. Plasma Facing Material by Self-Interstitial Solid Solution Strengthening – Problem, Proposition, and a Solution. Preprints2020, 2020100258. https://doi.org/10.20944/preprints202010.0258.v1
APA Style
Rafique, M.M.A. (2020). Plasma Facing Material by Self-Interstitial Solid Solution Strengthening – Problem, Proposition, and a Solution. Preprints. https://doi.org/10.20944/preprints202010.0258.v1
Chicago/Turabian Style
Rafique, M.M.A. 2020 "Plasma Facing Material by Self-Interstitial Solid Solution Strengthening – Problem, Proposition, and a Solution" Preprints. https://doi.org/10.20944/preprints202010.0258.v1
Abstract
Bubble (point defect) – a precursor of fuzz or under dense nanostructure formation is crystal lattice defect. Suitable selection of crystal lattice which inhibit Frenkel pair generation and intrinsically promotes selfinterstitial solid solution strengthening contributes effectively towards making plasma facing material. For this, interstitial sites, their size, amount / fraction, positions, tendency of occupation and diffusion parameters (e.g. activation energies (Q), activation volumes) are determined. Fcc iron carbon alloys (austenitic stainless steels AISI / SAE 321, fcc structure, Pearson code cF4, space group Fm3̅m) are proposed as suitable candidates. Along with their room temperature fcc structure having 12 interstitial positions (4 octahedral, 6 coordination sites and 8 tetrahedral, 4 coordination sites / unit cell) to allow insertion of self (iron) atoms, they have excellent corrosion resistance, thermal conductivity, and nonmagnetic properties. After their melting, casting, and machining to required dimensions and geometry, stabilizing heat treatment is applied to precipitate all carbon as TiC and prevent formation of Cr23C6 (sensitization). This resist heat and surface degradation and yield excellent architecture which not only inhibit Frankel pair generation but will also allow bulk assimilation or surface annihilation (loop punching) of this lattice point defect. A superior thermal, fluid, and structural design augment above
Keywords
point defect; crystal lattice; interstitial; austenitic; stabilization
Subject
Engineering, Automotive Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
