Loading…
Warm deformation and strain-hardening behaviors of fine-grained ZK60 alloy sheet
Tensile flow behaviors of the fine-grained ZK60 alloy sheet are investigated from 298 K to 523 K with strain rates from 10−1 s−1 to 10−3 s−1. The apparent activation energy tested at 523 K is estimated to be 103 kJ mol−1, indicating that grain-boundary sliding (GBS) associated with grain boundary di...
Saved in:
Published in: | Materials research express 2019-11, Vol.6 (12), p.126528 |
---|---|
Main Authors: | , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | Tensile flow behaviors of the fine-grained ZK60 alloy sheet are investigated from 298 K to 523 K with strain rates from 10−1 s−1 to 10−3 s−1. The apparent activation energy tested at 523 K is estimated to be 103 kJ mol−1, indicating that grain-boundary sliding (GBS) associated with grain boundary diffusion is the dominant deformation mechanism of the fine-grained ZK60 alloy. The effects of deformation temperature and strain rate on the strain-hardening and strain-softening behaviors are analyzed by the K-M approach. The results show that the dislocation proliferation contributes to the hardening process but DRX play an important role in the softening process. |
---|---|
ISSN: | 2053-1591 2053-1591 |
DOI: | 10.1088/2053-1591/ab3ed5 |