Influence of Boron Additions on Physical and Mechanical Properties of Arc-melted Tungsten and Tungsten - 1 Percent Tantalum Alloy PDF Download

Author: Peter L. Raffo
Publisher:
ISBN:
Category : Boron
Languages : en
Pages : 26

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Book Description
The effects of boron additions on the physical and mechanical properties of arc-melted tungsten and a tungsten -1 percent tantalum alloy were investigated. Boron additions significantly refined the arc-melted grain size of tungsten. The 1-hour recrystallization temperature was initially increased by small boron additions (approx. 0.01 atomic percent boron), after which it decreased continuously with increasing boron content. High-temperature tensile tests showed that the boron additions produced an initial rapid rise in strength followed by a leveling off of the strength-composition curve. Boron in solid solution was postulated to be the cause of the rapid increase in strength.