research article
Phase Transformation Accommodated Plasticity In Nanocrystalline Nickel
Abstract
Based on detailed x-ray diffraction and transmission electron microscopy we have found body-centered-cubic (bcc) Ni upon room-temperature rolling of nanocrystalline (nc) face-centered-cubic (fcc) Ni. The bcc phase forms via the Kurdjumov-Sachs (KS) martensitic transformation mechanism when the von Mises equivalent strain exceeds similar to 0.3, much higher than accessible in tensile testing. The fcc and bcc phases keep either the KS or the Nishiyama-Wasserman orientation relationship. Our results provide insights into the deformation physics in nc Ni, namely, the fcc-to-bcc phase transformation can also accommodate plasticity at large plastic strains. (C) 2008 American Institute of Physics- Article
- 期刊论文
- Deformation-mechanism
- Fcc Metals
- Aluminum
- Twins
- Slip
- Ni
- Al
- DEFORMATION-MECHANISM
- FCC METALS
- ALUMINUM
- TWINS
- SLIP
- NI
- AL
- Physics
- Physics, Applied
- aluminum
- twins
- gemini
- dislocations
- nickel
- aluminum
- aluminium
- al
- aluminium (deutsch)
- aluminium (francais)
- geminorum
- gem
- joints--dislocation
- luxations
- cottrell atmospheres
- cottrell locking
- dislocation arrays
- dislocation climb
- climb, dislocation
- dislocation density
- dislocation dipoles
- charged dislocations
- dislocation drag
- dislocation motion hindrance
- dislocation energy
- dislocation etching
- dislocation interactions
- dislocation jogs
- dislocation locking
- dislocation loops
- dislocation motion
- dislocation multiplication
- dislocation nucleation
- dislocation pile-ups
- dislocation sources
- dislocation structure
- edge dislocations
- frank-read sources
- kink bands
- bands (kink)
- screw dislocations
- helical dislocations
- vacancy condensation loops
- vacancy-dislocation interactions
- dislocation-vacancy interactions
- klettern von versetzungen
- montee des dislocations
- blocage des dislocations
- versetzungsblockierung
- dislocations (french)
- versetzungen
- bandes de pliage
- geknickte versetzungsbaender
- slip mechanisms
- mecanismes de glissement
- slip
- slip bands
- kink-bands
- kink-band structures
- jogs (dislocations)
- loops (dislocation)
- dislocation mobility
- line defects
- frank read sources
- dislocation glide
- dislocation translation
- glide, dislocation
- grain boundary sliding
- glissement des joints de grains
- korngrenzengleitung
- ni
- nickel (deutsch)
- nickel (francais)
- nonadiabatic interaction
- aluminium
- al
- aluminium (deutsch)
- aluminium (francais)
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Last time updated on 12/02/2018
This paper was published in Institute Of Mechanics,Chinese Academy of Sciences.
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