Thermodynamic Investigation of Alkali‐Metal‐Induced High Temperature Embrittlement in Al‐Li Alloys
Source abstract
Abstract
Alkali metals are undesirable impurity elements in aluminum-lithium alloys. Despite their trace amount, they lead to high temperature embrittlement (HTE). In the present work, the results of a thermodynamic investigation are presented to elucidate its mechanism and compared with available experimental data. HTE arises from an intergranular alkali-metal-rich liquid phase that segregates into grain boundaries from the matrix and significantly weakens their strength. A new model is developed to describe the tendency of HTE, which shows grain refinement can decrease the tendency.
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Research context
OpenAlex topics: Aluminum Alloys Composites Properties · High Temperature Alloys and Creep · Intermetallics and Advanced Alloy Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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