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The microstructure evolution in the isothermal compression of Ti-17 alloy.

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Title: The microstructure evolution in the isothermal compression of Ti-17 alloy.
Authors: Mu, Z.1,2, Li, H.1, Li, M.Q.1 honeymli@nwpu.edu.cn
Source: Materials Science & Engineering: A. Oct2013, Vol. 582, p108-116. 9p.
Subjects: Titanium alloys, Microstructure, Compression loads, Mechanical properties of metals, Parameter estimation, Temperature effect
Abstract: Abstract: The effects of processing parameters on flow curves and microstructure evolution in the isothermal compression of Ti-17 alloy are investigated. The experiments are conducted in a deformation temperature range of 800–920°C, strain rate range of 0.01–10.0s−1 and height reduction range of 30–70%. The flow stress increases with a decrease in deformation temperature or an increase in strain rate. Based on the optical microstructure observations, both of deformation temperature and strain rate have a great effect on the volume fraction of α grains. The effect of strain rate on primary α grains morphology and softening mechanism is of first-order importance compared with the effects of deformation temperature and strain. Transmission electron microscope (TEM) analysis is carried out at a deformation temperature of 840°C, strain rate of 0.1s−1 and 10.0s−1 to reveal the two mechanisms for the morphology evolution of primary α grains. When the strain rate is relatively low, the primary α grains are globularized after the penetration of β phase along α/α subboundaries. While the strain rate is relatively high, the primary α grains are elongated, and the dislocation density in grain interior is relatively high. [Copyright &y& Elsevier]
Copyright of Materials Science & Engineering: A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 89615079
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: The microstructure evolution in the isothermal compression of Ti-17 alloy.
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  Data: <searchLink fieldCode="AR" term="%22Mu%2C+Z%2E%22">Mu, Z.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Li%2C+H%2E%22">Li, H.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Li%2C+M%2EQ%2E%22">Li, M.Q.</searchLink><relatesTo>1</relatesTo><i> honeymli@nwpu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Materials+Science+%26+Engineering%3A+A%22">Materials Science & Engineering: A</searchLink>. Oct2013, Vol. 582, p108-116. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Titanium+alloys%22">Titanium alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Microstructure%22">Microstructure</searchLink><br /><searchLink fieldCode="DE" term="%22Compression+loads%22">Compression loads</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+properties+of+metals%22">Mechanical properties of metals</searchLink><br /><searchLink fieldCode="DE" term="%22Parameter+estimation%22">Parameter estimation</searchLink><br /><searchLink fieldCode="DE" term="%22Temperature+effect%22">Temperature effect</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: The effects of processing parameters on flow curves and microstructure evolution in the isothermal compression of Ti-17 alloy are investigated. The experiments are conducted in a deformation temperature range of 800–920°C, strain rate range of 0.01–10.0s−1 and height reduction range of 30–70%. The flow stress increases with a decrease in deformation temperature or an increase in strain rate. Based on the optical microstructure observations, both of deformation temperature and strain rate have a great effect on the volume fraction of α grains. The effect of strain rate on primary α grains morphology and softening mechanism is of first-order importance compared with the effects of deformation temperature and strain. Transmission electron microscope (TEM) analysis is carried out at a deformation temperature of 840°C, strain rate of 0.1s−1 and 10.0s−1 to reveal the two mechanisms for the morphology evolution of primary α grains. When the strain rate is relatively low, the primary α grains are globularized after the penetration of β phase along α/α subboundaries. While the strain rate is relatively high, the primary α grains are elongated, and the dislocation density in grain interior is relatively high. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Materials Science & Engineering: A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.msea.2013.06.043
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      – Code: eng
        Text: English
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        Type: general
      – SubjectFull: Microstructure
        Type: general
      – SubjectFull: Compression loads
        Type: general
      – SubjectFull: Mechanical properties of metals
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      – SubjectFull: Parameter estimation
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      – SubjectFull: Temperature effect
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              Text: Oct2013
              Type: published
              Y: 2013
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