Tunable TiAl 3 -Reinforced Aluminum Matrix Composites via In-Situ Reactive Printing: Insights from Operando Synchrotron Analysis and Microstructural Characterization-Reference-Cited by-同舟云学术

Tunable TiAl 3 -Reinforced Aluminum Matrix Composites via In-Situ Reactive Printing: Insights from Operando Synchrotron Analysis and Microstructural Characterization

Published:2024-06-25 Issue: Volume: Page:
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Author:

Tian Chenxi¹,Singh Kaushalendra¹,Wakai Akane¹,Dass Adrita¹,Bustillos Jenniffer¹,Chuang Andrew C.²,Moridi Atieh¹

Affiliation:

1. Cornell University

2. Argonne National Laboratory

Abstract

Additive-manufactured TiAl₃-reinforced aluminum matrix composite (AMC) materials were fabricated by forming TiAl₃ whiskers from the in-situ reaction between aluminum (Al) and titanium (Ti). The composite demonstrates enhancement of mechanical strength with tunable ductility compared to unreinforced material while using a feedstock mixture of only commercially available Al and Ti powder of standard size distribution. The enhancement to mechanical strength is attributed to both load transfer from the strong TiAl₃ reinforcement and the Hall-Petch strengthening from the refined grain size of the Al matrix. Operando synchrotron analysis of the in-situ reactive printing (IRP) process, coupled with postmortem microstructural characterizations, reveals that the dispersed TiAl₃ whiskers refine Al grain size by promoting heterogeneous nucleation through in-situ inoculation. This study validates the capability of IRP to strengthen the integration of material and geometry design in additive manufacturing by enabling the fabrication of highly tunable AMC.

Publisher

Research Square Platform LLC

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