Shahryar Mooraj

Dr. Shahryar Mooraj

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Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 January 2023 in Journal of Materials Informatics
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Journal Article
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Shahryar MoorajShahryar Mooraj
Shahryar Mooraj
WCWen Chen
Wen Chen
High-entropy alloys (HEAs) are an emerging class of alloys with multi-principal elements that greatly expands the compositional space for advanced alloy design. Besides chemistry, processing history can also affect the phase and microstructure formation in HEAs. The number of possible alloy compositions and processing paths gives rise to enormous material design space, which makes it challenging to explore by traditional trial-and-error approaches. This review highlights the progress in combinatorial high-throughput studies towards rapid prediction, manufacturing, and characterization of promising HEA compositions. This review begins with an introduction to HEAs and their unique properties. Then, this review describes high-throughput computational methods such as machine learning that can predict desired alloy compositions from hundreds or even thousands of candidates. The next section of this review presents advances in combinatorial synthesis of material libraries by additive manufacturing for efficient development of high-performance HEAs at bulk scale. The final section of this review discusses the high-throughput characterization techniques that are used to accelerate the material property measurements for systematic understanding of the composition-processing-structure-property relationships in combinatorial HEA libraries.

16 February 2024 in Communications Materials
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Journal Article
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Shahryar MoorajShahryar Mooraj
Shahryar Mooraj
GKGeorge Kim
George Kim
XFXuesong Fan
Xuesong Fan
SSShmuel Samuha
Shmuel Samuha
YXYujun Xie
Yujun Xie
WCWen Chen
Wen Chen
Laser powder-bed fusion (L-PBF) additive manufacturing presents ample opportunities to produce net-shape parts. The complex laser-powder interactions result in high cooling rates that often lead to unique microstructures and excellent mechanical properties. Refractory high-entropy alloys show great potential for high-temperature applications but are notoriously difficult to process by additive processes due to their sensitivity to cracking and defects, such as un-melted powders and keyholes. Here, we present a method based on a normalized model-based processing diagram to achieve a nearly defect-free TiZrNbTa alloy via in-situ alloying of elemental powders during L-PBF. Compared to its as-cast counterpart, the as-printed TiZrNbTa exhibits comparable mechanical properties but with enhanced elastic isotropy. This method has good potential for other refractory alloy systems based on in-situ alloying of elemental powders, thereby creating new opportunities to rapidly expand the collection of processable refractory materials via L-PBF.

9 August 2021 in Journal of Phase Equilibria and Diffusion
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SGShuai Guan
Shuai Guan
JRJie Ren
Jie Ren
Shahryar MoorajShahryar Mooraj
Shahryar Mooraj
YLYanfang Liu
Yanfang Liu
SFShuai Feng
Shuai Feng
WCWen Chen
Wen Chen

18 June 2024 in Communications Materials
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Journal Article
Open access
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Shahryar MoorajShahryar Mooraj
Shahryar Mooraj
XDXizhen Dong
Xizhen Dong
SZShengbiao Zhang
Shengbiao Zhang
YZYanming Zhang
Yanming Zhang
JRJie Ren
Jie Ren
WCWen Chen
Wen Chen
The far-from-equilibrium solidification during additive manufacturing often creates large residual stresses that induce solid-state cracking. Here we present a strategy to suppress solid-state cracking in an additively manufactured AlCrFe2Ni2 high-entropy alloy via engineering phase transformation pathway. We investigate the solidification microstructures formed during laser powder-bed fusion and directed energy deposition, encompassing a broad range of cooling rates. At high cooling rates (104−106 K/s), we observe a single-phase BCC/B2 microstructure that is susceptible to solid-state cracking. At low cooling rates (102−104 K/s), FCC phase precipitates out from the BCC/B2 matrix, resulting in enhanced ductility (~10 %) and resistance to solid-state cracking. Site-specific residual stress/strain analysis reveals that the ductile FCC phase can largely accommodate residual stresses, a feature which helps relieve residual strains within the BCC/B2 phase to prevent cracking. Our work underscores the value of exploiting the toolbox of phase transformation pathway engineering for material design during additive manufacturing.

22 November 2021 in Metallurgical and Materials Transactions A
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Journal Article
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PHPeijun Hou
Peijun Hou
Shahryar MoorajShahryar Mooraj
Shahryar Mooraj
VCVictor K. Champagne
Victor K. Champagne
MSMatthew J. Siopis
Matthew J. Siopis
PLPeter K. Liaw
Peter K. Liaw
WCWen Chen
Wen Chen

27 August 2025 in Advanced Materials
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Journal Article
Closed access
SZShengbiao Zhang
Shengbiao Zhang
CLChenyang Li
Chenyang Li
Shahryar MoorajShahryar Mooraj
Shahryar Mooraj
YLYicheng Lai
Yicheng Lai
RPRaj Sanjaykumar Patel
Raj Sanjaykumar Patel
WCWen Chen
Wen Chen