Lola Lilensten, Jean-Philippe Couzinié, Julie Bourgon, 等. Design and tensile properties of a bcc Ti-rich high-entropy alloy with transformation-induced plasticity[J]. 材料研究快报(英文), 2017,5(2):110-116.
Lola Lilensten, Jean-Philippe Couzinié, Julie Bourgon, et al. Design and tensile properties of a bcc Ti-rich high-entropy alloy with transformation-induced plasticity[J]. Materials Research Letters, 2017, 5(2): 110-116.
Lola Lilensten, Jean-Philippe Couzinié, Julie Bourgon, 等. Design and tensile properties of a bcc Ti-rich high-entropy alloy with transformation-induced plasticity[J]. 材料研究快报(英文), 2017,5(2):110-116.DOI: 10.1080/21663831.2016.1221861.
Lola Lilensten, Jean-Philippe Couzinié, Julie Bourgon, et al. Design and tensile properties of a bcc Ti-rich high-entropy alloy with transformation-induced plasticity[J]. Materials Research Letters, 2017, 5(2): 110-116.DOI: 10.1080/21663831.2016.1221861.
Design and tensile properties of a bcc Ti-rich high-entropy alloy with transformation-induced plasticity
BSTRACTA new bcc Ti-rich high-entropy alloy (HEA) of composition Ti
35
Zr
27.5
Hf
27.5
Nb
5
Ta
5
was designed using the ‘d-electron alloy design’ approach. The tensile behavior displays a marked transformation-induced plasticity effect resulting in a high normalized work-hardening rate of 0.103 without loss of ductility when compared to the reference composition Ti
20
Zr
20
Hf
20
Nb
20
Ta
20
. In this paper
a detailed microstructural analysis was performed to understand the deformation process
revealing architectural-type microstructures and a high volume fraction (65%) of internally twinned stress-induced martensite
α
″
after mechanical testing. This study opens the way to mechanical properties optimization and enhancement of titanium-based HEAs by combining multiple alloying designs.
IMPACT STATEMENT
For the first time
proof is given that transformation-induced plasticity was triggered in a bcc refractory high-entropy alloy
leading to a twofold increase in the normalized work-hardening rate.