The Effect of Heating Rate on Discontinuous Grain Boundary Alpha Formation in a Metastable Beta Titanium Alloy

Continuous grain boundary α ( α GB ) is often observed in age-hardened metastable β titanium alloys and plays a detrimental role in ductility. In this work, we show that the heating rate to the aging temperature is crucial in determining the extent of α GB . The extent of α GB is determined by the e...

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Veröffentlicht in:	Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2020-08, Vol.51 (8), p.3766-3771
Hauptverfasser:	Gao, Junheng, Rainforth, W. Mark
Format:	Artikel
Sprache:	eng
Schlagworte:	Age hardening Aging (metallurgy) Characterization and Evaluation of Materials Chemistry and Materials Science Communication Grain boundaries Heating rate Materials Science Metallic Materials Nanotechnology Structural Materials Surfaces and Interfaces Thin Films Titanium alloys Titanium base alloys
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Zusammenfassung:	Continuous grain boundary α ( α GB ) is often observed in age-hardened metastable β titanium alloys and plays a detrimental role in ductility. In this work, we show that the heating rate to the aging temperature is crucial in determining the extent of α GB . The extent of α GB is determined by the extent of formation of isothermal ω at grain boundaries. This new finding is significant for suppressing continuous α GB formation in aging hardened β titanium alloys.
ISSN:	1073-5623 1543-1940
DOI:	10.1007/s11661-020-05856-4