Effect of Al Addition on Thermal Stability and Thermoplastic Forming Ability of Ti35Zr15Ni40Cu10 Metallic Glass in the Supercooled Liquid Region

Kim, Yong Joo; Kim, Jeong Soo; Kim, Woo Chul; Park, Jong Woong; Kim, Dong-Won; Kim, Do Hyang

doi:10.1007/s12540-021-00989-6

Cited by 2 publications

(1 citation statement)

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“…Moreover, it was observed that the viscosity behavior with the increase in the strain rate and temperature is more stable in the Si-added sample, showing the high capability of viscoplastic response in this state. As depicted in other works, if the minor addition causes the higher thermal stability in the super-cooled liquid, the viscoplastic response improves, which is due to the homogeneous generation of loosely packed structure in the structure 44,45 . Consequently, it is derived that the minor addition with a negative heat of mixing and a proper size can amend the thermal stability, GFA and homogenous flow characteristics of MG alloys.…”

Section: Resultsmentioning

confidence: 53%

Role of Si Minor Addition on Glass Formation and Flow Stress Characteristics of a Zr-Based Metallic Glass

et al. 2021

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The characterization of strain rate effects near glass transition temperature (T g ) gives important information on flow behavior of metallic glasses (MGs). For this purpose, the tensile strain rate jump test was carried out near glass transition temperature to evaluate the flow behaviors of ZrCoAl(Si) MG ribbons. The primary thermal analyses showed that the Si minor addition into the ZrCoAl alloy leads to the betterment of thermal stability and the glass forming ability (GFA), correlated with the small size of Si atoms and subsequent formation of denser atomic clusters and thermodynamically liquid stabilization in the system. The tensile strain rate jump test indicated that minor adding of Si element decreases the sensitivity of glassy alloy to the flow stress and improves the stability of amorphous structure under increase in the strain rate and applied temperature. It was also observed that the viscosity behavior is more stable with the increase of the strain rate and temperature in the Si-added sample, implying the high capability of viscoplastic response in this state.

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Section: Resultsmentioning

confidence: 53%