Effect of nitrogen on the strength of thorium | Zendy

D. T. Peterson | Zendy; David Robert McLachlan | Zendy

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Effect of nitrogen on the strength of thorium

Author(s) -

D. T. Peterson,

David Robert McLachlan

Publication year - 1975

Publication title -

metallurgical transactions a

Language(s) - English

Resource type - Journals

eISSN - 2379-0180

pISSN - 0360-2133

DOI - 10.1007/bf02641929

Subject(s) - thorium , nitrogen , flow stress , materials science , crystallite , strain hardening exponent , carbon fibers , activation energy , strain (injury) , metallurgy , chemistry , composite material , strain rate , uranium , organic chemistry , medicine , composite number

The effect of nitrogen in solid solution on the plastic deformation of polycrystalline thorium was studied by measuring the flow stress from 4.2 K to 773 K at several strain rates. Nitrogen was found to behave similarly to carbon in thorium and increased the thermally activated component of the flow stress. The activation energy was 1.3 eV for overcoming nitrogen atoms in solution. Aging the higher nitrogen alloys produced an age hardening contribution to the flow stress which was a thermally activated component at about 600 K but became an athermal component at lower temperatures.

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