Indirect squeeze casting of ZM5 baffle with linear segregation and its formation mechanism

Jing, Jianhui; Chen, Liwen; Wang, Kaile; Zhao, Yuan; Chen, Lei; Hou, Hua; Ni, Wei; Zhao, Yuhong

doi:10.1016/j.jmrt.2023.11.075

Journal of Materials Research and Technology

2023

DOI: 10.1016/j.jmrt.2023.11.075

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Indirect squeeze casting of ZM5 baffle with linear segregation and its formation mechanism

Jianhui Jing,

Liwen Chen,

Kaile Wang

et al.

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2024

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Cited by 2 publications

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Role of Intermetallics in Creep Behavior of Squeezed Cast Ca‐ and Sr‐Modified AZ91 Magnesium Alloy

Patil,

Ghosh,

Borkar

2024

Adv Eng Mater

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Magnesium (Mg) alloys, particularly AZ91, have gained significant attention due to their castability and lightweight properties. The present study investigates the effects of individual strontium (Sr) and combined calcium (Ca)–strontium (Sr) addition on the microstructure evolution and creep performance of AZ91 alloy. Alloys are prepared via squeeze‐casting and subjected to tensile creep tests. Scanning electron microscopy and X‐ray diffraction studies reveal Al2Ca and Al4Sr phases at the expense of the β‐Mg17Al12 phase. Further, thermodynamic analysis shows these phases have higher dissolution compared to the β‐Mg17Al12 phase. The AZ91 alloy with the combined addition of Ca and Sr demonstrates a much lower steady‐state creep rate compared to individual Ca‐ or Sr‐modified AZ91 alloys. Further analysis of the creep data indicates that dislocation climb‐controlled power‐law creep governs in both Sr‐ and Ca–Sr‐modified AZ91 alloy. Microstructural investigation on the postrupture sample indicates that needle‐shaped Al4Sr acts as a crack/cavity initiator, while a skeleton shape‐interconnected network consisting of Al2Ca and/or Al4Sr precipitates is effective in retarding crack propagation. The higher thermal stability of Al2Ca and Al4Sr phases, along with the grain size refinement, is found to be the major factors contributing to improved creep performance in Sr–Ca‐modified AZ91 alloy.

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Role of Intermetallics in Creep Behavior of Squeezed Cast Ca‐ and Sr‐Modified AZ91 Magnesium Alloy

Patil,

Ghosh,

Borkar

2024

Adv Eng Mater

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Applications of unified phase-field methods to designing microstructures and mechanical properties of alloys

Zhao,

Xin,

Tang

et al. 2024

MRS Bulletin

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Indirect squeeze casting of ZM5 baffle with linear segregation and its formation mechanism

Cited by 2 publications

References 38 publications

Role of Intermetallics in Creep Behavior of Squeezed Cast Ca‐ and Sr‐Modified AZ91 Magnesium Alloy

Role of Intermetallics in Creep Behavior of Squeezed Cast Ca‐ and Sr‐Modified AZ91 Magnesium Alloy

Applications of unified phase-field methods to designing microstructures and mechanical properties of alloys

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