Research and Development on the Effects of High Pressure and Temperature on Various Elements and Binary Alloys

摘要

The accomplishments of the contract period July 1, 1958 to September 30, 1959 are summarized. High-pressure high-temperature apparatus capable of subjecting test specimens to 100, 000 atmospheres pressure at temperatures in excess of 1500°C was designed and con¬structed. Investigations carried out in this apparatus demonstrate that high hydrostatic pressure acts to lower the temperature of martensitic transformations in iron-nickel alloys and expands the temperature range of the gamma loop in the iron-chromium system.