Crystal grain growth during room temperature high pressure Martensitic alpha to omega transformation in zirconium

Journal Article · Mon Dec 31 23:00:00 EST 2007 · Applied Physics Journal

OSTI ID:962230

Velisavljevic, Nenad ^[1]; Chesnut, Gary N ^[1]; Stevens, Lewis L ^[1]; Dattelbaum, Dana M ^[1]

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1. Los Alamos National Laboratory

Systematic increase in transition pressure with increase in interstitial impurities is observed for the martensitic {alpha} {yields} {omega} structural phase transition in Zr. Significant room temperature crystal grain growth is also observed for the two highest purity samples at this transition, while in the case of the lowest purity sample interstitial impurities obstruct grain growth even as the sample is heated to 1279 K. Our results show the importance of impurities in controlling structural phase stability and other mechanical properties associated with the {alpha} {yields} {omega} structural phase transition.

• Research Organization: Los Alamos National Laboratory (LANL)
• Sponsoring Organization: DOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 962230
• Report Number(s): LA-UR-08-04202; LA-UR-08-4202
• Journal Information: Applied Physics Journal, Journal Name: Applied Physics Journal
• Country of Publication: United States
• Language: English

Related Subjects

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GRAIN GROWTH
IMPURITIES
INTERSTITIALS
MECHANICAL PROPERTIES
PHASE STABILITY
TRANSFORMATIONS
ZIRCONIUM