Stainless steel reveals an anomaly in thermal expansion behavior of severely deformed materials
Research output: Contribution to journal › Article › Research › peer-review
Standard
In: Physical review materials , Vol. 5.2021, No. 11, 113609, 30.11.2021.
Research output: Contribution to journal › Article › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex - Download
}
RIS (suitable for import to EndNote) - Download
TY - JOUR
T1 - Stainless steel reveals an anomaly in thermal expansion behavior of severely deformed materials
AU - Renk, Oliver
AU - Enzinger, Robert Josef
AU - Gammer, Christoph
AU - Scheiber, Daniel
AU - Oberdorfer, Bernd
AU - Tkadletz, Michael
AU - Stark, Andreas
AU - Sprengel, Wolfgang
AU - Pippan, Reinhard
AU - Eckert, Jürgen
AU - Romaner, Lorenz
AU - Ruban, Andrei
N1 - Publisher Copyright: © 2021 American Physical Society.
PY - 2021/11/30
Y1 - 2021/11/30
N2 - Thermal expansion of materials is of fundamental practical relevance and arises from an interplay of several material properties. For nanocrystalline materials, accurate measurements of thermal expansion based on high-precision reference dilatometry allow inferring phenomena taking place at internal interfaces such as vacancy annihilation at grain boundaries. Here we report on measurements obtained for a severely deformed 316L austenitic steel, showing an anomaly in difference dilatometry curves which we attribute to the exceptionally high density of stacking faults. On the basis of ab intio simulations we report evidence that the peculiar magnetic state of the 316L austenitic steel causes stacking faults to expand more than the matrix. So far, the effect has only been observed for this particular austenitic steel but we expect that other magnetic materials could exhibit an even more pronounced anomaly.
AB - Thermal expansion of materials is of fundamental practical relevance and arises from an interplay of several material properties. For nanocrystalline materials, accurate measurements of thermal expansion based on high-precision reference dilatometry allow inferring phenomena taking place at internal interfaces such as vacancy annihilation at grain boundaries. Here we report on measurements obtained for a severely deformed 316L austenitic steel, showing an anomaly in difference dilatometry curves which we attribute to the exceptionally high density of stacking faults. On the basis of ab intio simulations we report evidence that the peculiar magnetic state of the 316L austenitic steel causes stacking faults to expand more than the matrix. So far, the effect has only been observed for this particular austenitic steel but we expect that other magnetic materials could exhibit an even more pronounced anomaly.
UR - http://www.scopus.com/inward/record.url?scp=85121217015&partnerID=8YFLogxK
U2 - 10.1103/PhysRevMaterials.5.113609
DO - 10.1103/PhysRevMaterials.5.113609
M3 - Article
AN - SCOPUS:85121217015
VL - 5.2021
JO - Physical review materials
JF - Physical review materials
SN - 2475-9953
IS - 11
M1 - 113609
ER -