Microstructural evolution of Ti–Mo binary alloy via thermohydrogen treatment
Source abstract
Abstract
The microstructural evolution of Ti-Mo alloys via thermohydrogen treatment and the orientation relationships (ORs) between δ -hydride precipitates and the α -phase were investigated. Results indicated that increasing Mo and hydrogen content elevate the β-phase volume fraction while reducing twin density within the α-phase. This promotes a transition from twisted fibrous to straight basket-weave microstructures, and induces overall microstructural refinement following thermohydrogen treatment. Two distinct δ -hydrides types precipitate in association with the β -phase, and their volume fractions decrease with Mo addition due to enhanced solid solubility of hydrogen in the matrix and suppressed hydrogen diffusion. Four orientation relationships between δ -hydrides and α -phase are characterized. The { } and { 3} planes are favorable for OR1 and OR2 δ -hydrides with elongated morphology, accompanying extensive twin formation. The OR3 and OR4 δ -hydrides typically appear fine short lamellae on the { } and { } planes. The reason is analyzed in terms of microstructure characterization, lattice strain analysis, and interface mismatch calculations.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Titanium Alloys Microstructure and Properties · Metal and Thin Film Mechanics · Intermetallics and Advanced Alloy Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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