|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials
||K-69: Dynamic Mechanical Behaviour of Lean Duplex Stainless Steel 2101
||Eng C Yeo, Ali Ameri, Juan P. Escobedo-Diaz
|On-Site Speaker (Planned)
||Juan P. Escobedo-Diaz
The effect of the history of quasistatic plastic deformation on the mechanical response of hot rolled Lean Duplex Stainless Steel 2101 (LDSS2101) was investigated at high strain rates. Samples were quasi-statically to an intermediate state of plastic deformation (~25%) and subsequently compressed at high strain rates using a Split Hopkinson Pressure bar (SHPB). Microstructural analyses were conducted using optical microscopy to correlate mechanical responses with microstructural evolution. Results show that LDSS2101 that pre-compressed specimens display an enhanced dynamic yield response compared to as-received specimens. However, significant work softening was also observed at high strain rates. Microstructural analysis of LDSS2101 revealed the phase composition of the material after the described processes and may provide explanation for the observed mechanical responses. These findings will help in determining the use of LDSS2101 in specific applications that involve a sequence of quasistatic/dynamic compression loadings.