Understanding the tensile ductility of a novel low-activation BCC high-entropy alloy deformed at intermediate temperature

Jiang，H.1,2; He，B. B.2; Huang，M. X.1

2024-11-01

10.1016/j.scriptamat.2024.116269

Scripta Materialia   影响因子和分区

1359-6462

Low-activation body-centered cubic (BCC) high-entropy alloys (HEAs) often possess poor tensile ductility. Here we report a novel low-activation VCrFeMn BCC HEA that exhibits good tensile ductility at 650 °C and above. However, it shows poor tensile ductility at 500 °C and below, indicating that the ductile-to-brittle transition temperature (DBTT) of the current HEA falls between 500 °C and 650 °C. At temperatures above DBTT, the current BCC HEA deforms via dislocation glide, similar to the tensile deformation observed in conventional ductile BCC alloys, which is rarely reported for non-refractory BCC HEAs.

BCC HEA DBTT Dislocation plasticity Low-activation Tensile ductility

EI

英语

通讯

MATERIALS SCIENCE

2-s2.0-85197757072

Scopus

1.Department of Mechanical Engineering,The University of Hong Kong,Hong Kong,Pokfulam Road,Hong Kong
2.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Jiang，H.,He，B. B.,Huang，M. X.. Understanding the tensile ductility of a novel low-activation BCC high-entropy alloy deformed at intermediate temperature[J]. Scripta Materialia,2024,252.

Jiang，H.,He，B. B.,&Huang，M. X..(2024).Understanding the tensile ductility of a novel low-activation BCC high-entropy alloy deformed at intermediate temperature.Scripta Materialia,252.

Jiang，H.,et al."Understanding the tensile ductility of a novel low-activation BCC high-entropy alloy deformed at intermediate temperature".Scripta Materialia 252(2024).