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Erschienen in: Rare Metals 3/2013

01.06.2013

Static softening behaviors of 7055 alloy during the interval time of multi-pass hot compression

verfasst von: Liang-Ming Yan, Jian Shen, Jun-Peng Li, Bai-Ping Mao

Erschienen in: Rare Metals | Ausgabe 3/2013

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Abstract

Multipass plain strain compression test of 7055 alloy was carried out on Gleeble 1500D thermomechanical simulator to study the effect of interval time on static softening behavior between two passes. Microstructural features of the alloy deformed with delay times varying from 0 to 180 s after achieving a reduction of ~52 % in the 13 stages was investigated through TEM and EBSD observations. The 14th pass of peak stresses after different delay times were gained. The peak stress decreases with the interstage delay time increasing, but the decreasing trend is gradually slower. Static recovery, metadynamic recrystallization, and/or static recrystallization can be found in the alloy during two passes. The recovery and recrystallization degree increases with longer interstage delay time. The static recovery is the main softening mechanism. Subgrain coalescence and subgrain growth together with particle-stimulated nucleation are the main nucleation mechanisms for static recrystallization.

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Metadaten
Titel
Static softening behaviors of 7055 alloy during the interval time of multi-pass hot compression
verfasst von
Liang-Ming Yan
Jian Shen
Jun-Peng Li
Bai-Ping Mao
Publikationsdatum
01.06.2013
Verlag
Nonferrous Metals Society of China
Erschienen in
Rare Metals / Ausgabe 3/2013
Print ISSN: 1001-0521
Elektronische ISSN: 1867-7185
DOI
https://doi.org/10.1007/s12598-013-0065-6

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