| Description |
vii, 36 leaves : illustrations ; 28 cm. |
| Summary |
"The precipitation process in a Mg - 3.5 wt. % Th - 1. wt. % Mn alloy during aging at 260°, 350° and 400°C was determined principally by transmission electron microscopy. At 350° and 400°C, general precipitation of the equilibrium Mg₄Th phase moderately hardens the alloy. No transition lattice of this phase was seen. The Mg₄Th precipitate forms initially as disc shaped plates parallel either to the prism or basal plane of the matrix...During prolonged aging at 400°C the plates lengthen into long laths on either of the above planes in the close packed direction...At 260°C an unidentified G. P. zone appearing precipitate forms"--Abstract, leaf ii. |
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