INTERACTION OF INTERSTITIAL CLUSTERS WITH RHENIUM, OSMIUM, AND TANTALUM IN TUNGSTEN

Book · Thu Sep 01 00:00:00 EDT 2016

OSTI ID:1327156

Setyawan, Wahyu; Nandipati, Giridhar; Kurtz, Richard J.

In the previous semi annual report, we explored the stability of interstitial clusters in W up to size seven. In this report, we study the binding of those clusters to Re, Os, and Ta atoms. For each cluster size, the three most stable configurations are considered to average the binding property. The average binding energy to a Re decreases from 0.79 eV for a size-1 cluster (a [111] dumbbell) to 0.65 eV for a size-7 cluster. For Os, the binding decreases from 1.61 eV for a [111] dumbbell to 1.34 eV for a size-7 cluster. Tantalum is repulsive to interstitial clusters with binding energy ranges from -0.61 eV for a [111] dumbbell to -0.5 eV for a size-7 cluster.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1327156
• Report Number(s): PNNL-SA-120032; AT2030110
• Resource Relation: Related Information: Fusion Reactor Materials Semiannual Progress Report for the Period Ending June 30, 2016, DOE/ER-0313/60, 60:183-187
• Country of Publication: United States
• Language: English

Related Subjects

Fusion Materials
Interstitial cluster
Rhenium Osmium Tantalum
tungsten alloys