Work Softening And Annealing Hardening Of Deformed Nanocrystalline Nickel


Autoria(s): Zhang XY; Liu Q; 武晓雷; Zhu AW
Data(s)

2008

Resumo

We reported that work softening takes place during room-temperature rolling of nanocrystalline Ni at an equivalent strain of around 0.30. The work softening corresponds to a strain-induced phase transformation from a face-centered cubic (fcc) to a body-centered cubic (bcc) lattice. The hardness decreases with increasing volume fraction of the bcc phase. When the deformed samples are annealed at 423 K, a hardening of the samples takes place. This hardening by annealing can be attributed to a variety of factors including the recovery transformation from the bcc to the fcc phase, grain boundary relaxation, and retardation of dislocation gliding by microtwins.

Identificador

http://dspace.imech.ac.cn/handle/311007/25796

http://www.irgrid.ac.cn/handle/1471x/2398

Idioma(s)

英语

Fonte

Applied Physics Letters, 2008, 93(26)

Palavras-Chave #Annealing #Deformation #Grain Boundaries #Hardness #Nanostructured Materials #Nickel #Rolling #Slip #Softening #Solid-State Phase Transformations #Twinning #Work Hardening #Molecular-Dynamics Simulation #Deformation-Mechanism #Aluminum #Metals #Twins #Microstructure #Strength #Growth #Copper #Ni
Tipo

期刊论文