A study of the recrystallization and the mechanical properties of indium

<p>"The recrystallization temperature and the mechanical properties of tensile strength, elongation, reduction in area and hardness were determined for 99.97% indium. Metallographic techniques were developed and stress rupture data were obtained.</p> <p>Single crystals of indium were grown in a horizontal furnace with a traveling temperature zone, and sectioned in a strain-free manner, with an etch-cutter. Because of the low recrystallization temperature of indium, no further work was done on the single crystals.</p> <p>The effect of recrystallization on electrical resistance, thermoelectric force, hardness, bending strength, crystallographic orientation and microstructure was studied. The range of recrystallization temperature for small amounts of cold work was from -40° to 0° C and for large amounts of cold work was from -11° to -70° C.</p> <p>The mechanical properties were found to be a follows: hardness, 0.72 Brinell, 1.197 Knoop and 1.266 to 1.402 DPH; tensile strength 388 psi.; elongation, 70%; and reduction in area, 95%. Stress rupture data were obtained, and a master rupture was plotted for indium.</p> <p>A major improvement was made in the etching procedure which employed aqua regia to show grain orientation and contrast. The use of the etch-cutter to obtain unrecrystallized microstructures was also unique"--Abstract, page i.</p>

Name thesis:degree_name

Ph. D. in Metallurgical Engineering

Grantor

Missouri School of Mines and Metallurgy

Year dc:date.available

2016

Author dc:creator

• Reitsma, Louis John, Jr.

• Metallurgy

Repository record dc:identifier

https://scholarsmine.mst.edu/doctoral_dissertations/972

OAI identifier oai:identifier

oai:scholarsmine.mst.edu:doctoral_dissertations-1974