Abstract
The present case study demonstrates that high-precision dilatometry serves as sensitive tool for quantitatively characterising precipitation processes down to small relative length changes in the range of 10-5 and covering long time scales exceeding 105 s. For a dilute Al-based Al–Mg–Si alloy, the amount of the metastable coherent β' -phase and the semicoherent β''-phase as well as of the stable β-phase could be determined on an absolute scale from in-situ relative length change measurements upon long-time isothermal annealing. The quantitative analysis allows an assessment on the various contributions of the length change, i.e. the volume excess of the precipitates, the volume change of the matrix upon precipitation of solute atoms, and the length change due to the formation of interfaces.
| Original language | English |
|---|---|
| Pages (from-to) | 301-309 |
| Number of pages | 9 |
| Journal | Philosophical Magazine Letters |
| Volume | 98 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 30 Nov 2018 |
| Externally published | Yes |
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Keywords
- alloys
- Dilatometry
- precipitation
- thermal analysis
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Quantitative volumetric identification of precipitates in dilute alloys using high-precision isothermal dilatometry. / Hengge, E.; Enzinger, R.; Luckabauer, M.; Sprengel, W.; Würschum, R.
In: Philosophical Magazine Letters, Vol. 98, No. 7, 30.11.2018, p. 301-309.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Quantitative volumetric identification of precipitates in dilute alloys using high-precision isothermal dilatometry
AU - Hengge, E.
AU - Enzinger, R.
AU - Luckabauer, M.
AU - Sprengel, W.
AU - Würschum, R.
PY - 2018/11/30
Y1 - 2018/11/30
N2 - The present case study demonstrates that high-precision dilatometry serves as sensitive tool for quantitatively characterising precipitation processes down to small relative length changes in the range of 10-5 and covering long time scales exceeding 105 s. For a dilute Al-based Al–Mg–Si alloy, the amount of the metastable coherent β' -phase and the semicoherent β''-phase as well as of the stable β-phase could be determined on an absolute scale from in-situ relative length change measurements upon long-time isothermal annealing. The quantitative analysis allows an assessment on the various contributions of the length change, i.e. the volume excess of the precipitates, the volume change of the matrix upon precipitation of solute atoms, and the length change due to the formation of interfaces.
AB - The present case study demonstrates that high-precision dilatometry serves as sensitive tool for quantitatively characterising precipitation processes down to small relative length changes in the range of 10-5 and covering long time scales exceeding 105 s. For a dilute Al-based Al–Mg–Si alloy, the amount of the metastable coherent β' -phase and the semicoherent β''-phase as well as of the stable β-phase could be determined on an absolute scale from in-situ relative length change measurements upon long-time isothermal annealing. The quantitative analysis allows an assessment on the various contributions of the length change, i.e. the volume excess of the precipitates, the volume change of the matrix upon precipitation of solute atoms, and the length change due to the formation of interfaces.
KW - alloys
KW - Dilatometry
KW - precipitation
KW - thermal analysis
UR - http://www.scopus.com/inward/record.url?scp=85056168150&partnerID=8YFLogxK
U2 - 10.1080/09500839.2018.1542170
DO - 10.1080/09500839.2018.1542170
M3 - Article
AN - SCOPUS:85056168150
VL - 98
SP - 301
EP - 309
JO - Philosophical Magazine Letters
JF - Philosophical Magazine Letters
SN - 0950-0839
IS - 7
ER -