Simultaneous enhancement of strength and fatigue crack growth behavior of nanocrystalline steels by annealing
Research output: Contribution to journal › Article › Research › peer-review
Standard
In: Scripta Materialia, Vol. 139.2017, No. October, 01.10.2017, p. 39-43.
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 - Simultaneous enhancement of strength and fatigue crack growth behavior of nanocrystalline steels by annealing
AU - Leitner, Thomas
AU - Pillmeier, Simon
AU - Kormout, Karoline S.
AU - Pippan, Reinhard
AU - Hohenwarter, Anton
PY - 2017/10/1
Y1 - 2017/10/1
N2 - Nanocrystalline materials tend to have an inferior fatigue crack-growth behavior, compared to coarser-grained counterparts, due to the loss of crack-closure effects. Strategies to mitigate this effect are widely unknown as grain-refinement changes the strength, however, often also the fracture-mode and cyclic material behavior so that the effect of individual parameters is difficult to discriminate. To address this issue, the fatigue crack-growth behavior of a nanocrystalline austenitic-steel (316L) in two conditions with different strength but comparable grain-size is investigated. The increased strength level, realized by an annealing treatment, leads to an improvement of the fatigue crack-growth behavior.
AB - Nanocrystalline materials tend to have an inferior fatigue crack-growth behavior, compared to coarser-grained counterparts, due to the loss of crack-closure effects. Strategies to mitigate this effect are widely unknown as grain-refinement changes the strength, however, often also the fracture-mode and cyclic material behavior so that the effect of individual parameters is difficult to discriminate. To address this issue, the fatigue crack-growth behavior of a nanocrystalline austenitic-steel (316L) in two conditions with different strength but comparable grain-size is investigated. The increased strength level, realized by an annealing treatment, leads to an improvement of the fatigue crack-growth behavior.
KW - Austenitic steels
KW - Fatigue crack growth
KW - High pressure torsion
KW - Nanocrystalline materials
KW - Severe plastic deformation
UR - http://www.scopus.com/inward/record.url?scp=85020782658&partnerID=8YFLogxK
U2 - 10.1016/j.scriptamat.2017.05.051
DO - 10.1016/j.scriptamat.2017.05.051
M3 - Article
AN - SCOPUS:85020782658
VL - 139.2017
SP - 39
EP - 43
JO - Scripta Materialia
JF - Scripta Materialia
SN - 1359-6462
IS - October
ER -
