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Title: On deformation-induced continuous recrystallization in a superplastic Al-Li-Cu-Mg-Zr alloy

Abstract

A quantified description is given of the evolution of continuous recrystallization of a warm-rolled Al-Li-Cu-Mg-Zr alloy deformed at 515 C and at different strain rates. Deformation is found to induce a rapid subgrain growth, and the higher strain rate results in more rapid subgrain growth and a finer recrystallized grain size. This is attributed to deformation-induced subgrain boundary to migration. Boundary misorientations between adjacent grains increase rapidly during deformation. The higher strain rate results in a faster increase in misorientations which is proportional to the subgrain growth during static annealing. Deformation results in a rapid increase in misorientation with subgrain size. Dislocation gliding in grains is suggested to be the main deformation mechanism before the formation of the high angle grain boundaries. The absorption of dislocations into subgrain boundaries is considered to be the reason for the rapid increase in misorientations during deformation. 19 refs.

Authors:
;  [1]
  1. Harbin Institute of Technology, (China)
Publication Date:
OSTI Identifier:
7267304
Resource Type:
Journal Article
Journal Name:
Acta Metallurgica et Materialia; (United States)
Additional Journal Information:
Journal Volume: 40:7; Journal ID: ISSN 0956-7151
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM ALLOYS; RECRYSTALLIZATION; COPPER ALLOYS; LITHIUM ALLOYS; MAGNESIUM ALLOYS; ZIRCONIUM ALLOYS; ALLOY SYSTEMS; DEFORMATION; DISLOCATIONS; ELECTRON MICROSCOPY; GRAIN BOUNDARIES; GRAIN GROWTH; GRAIN SIZE; MICROSTRUCTURE; STRAIN RATE; ALLOYS; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; LINE DEFECTS; MICROSCOPY; SIZE; 360102* - Metals & Alloys- Structure & Phase Studies

Citation Formats

Liu, Qing, Huang, Xiaoxu Yao, Mei, and Yang, Jinfeng. On deformation-induced continuous recrystallization in a superplastic Al-Li-Cu-Mg-Zr alloy. United States: N. p., 1992. Web.
Liu, Qing, Huang, Xiaoxu Yao, Mei, & Yang, Jinfeng. On deformation-induced continuous recrystallization in a superplastic Al-Li-Cu-Mg-Zr alloy. United States.
Liu, Qing, Huang, Xiaoxu Yao, Mei, and Yang, Jinfeng. Wed . "On deformation-induced continuous recrystallization in a superplastic Al-Li-Cu-Mg-Zr alloy". United States.
@article{osti_7267304,
title = {On deformation-induced continuous recrystallization in a superplastic Al-Li-Cu-Mg-Zr alloy},
author = {Liu, Qing and Huang, Xiaoxu Yao, Mei and Yang, Jinfeng},
abstractNote = {A quantified description is given of the evolution of continuous recrystallization of a warm-rolled Al-Li-Cu-Mg-Zr alloy deformed at 515 C and at different strain rates. Deformation is found to induce a rapid subgrain growth, and the higher strain rate results in more rapid subgrain growth and a finer recrystallized grain size. This is attributed to deformation-induced subgrain boundary to migration. Boundary misorientations between adjacent grains increase rapidly during deformation. The higher strain rate results in a faster increase in misorientations which is proportional to the subgrain growth during static annealing. Deformation results in a rapid increase in misorientation with subgrain size. Dislocation gliding in grains is suggested to be the main deformation mechanism before the formation of the high angle grain boundaries. The absorption of dislocations into subgrain boundaries is considered to be the reason for the rapid increase in misorientations during deformation. 19 refs.},
doi = {},
journal = {Acta Metallurgica et Materialia; (United States)},
issn = {0956-7151},
number = ,
volume = 40:7,
place = {United States},
year = {1992},
month = {7}
}