DURING the last few years a programme of creep tests under general stress systems at high temperatures has been carried out at the N.P.L., using four metallic alloys which were chosen as being representative of basic groups of materials used in practice in machinery operating at high temperatures. This work, it was hoped, would fulfil, at least partly, the great need for experimental data in this field, as opposed to the comparative abundance of theoretical work available, and also enable a critical examination of the merits of this theoretical work to be made. The materials chosen in order of examination were a cast 0–17 per cent carbon steel, an aluminium alloy (R.R. 59), a magnesium alloy (containing 2 per cent aluminium), and a nickel-chromium alloy (Nimonic 75). Each material was tested at temperatures lying within the normal working range of the material in question. Thus the 0–17 per cent carbon steel was tested at 350, 450 and 550 dcg. C. (662, 842 and 1,022 deg. F.), the aluminium alloy at 150 and 200 deg. C. (302 and 392 dcg. F.), the magnesium alloy at 20 and 50 deg. C. (68 and 122 dcg. F.), and the nickel-chromium alloy at 550 and 650 dcg. C. (1,022 and 1,202 deg. F.).
Creep Under Complex Stress Systems at High Temperatures
A Paper Circulated for Written Discussion by the Institution of Mechanical Engineers
Aircraft Engineering and Aerospace Technology ; 24 , 1 ; 6-16
01.01.1952
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Complex Stress Creep Relaxation of Metallic Alloys at Elevated Temperatures
Emerald Group Publishing | 1959
|Complex Stress Creep Relaxation of Metallic Alloys at Elevated Temperatures
Emerald Group Publishing | 1959
|Research on Creep and Fracture at High Temperatures
Emerald Group Publishing | 1954
|Complex Stress Creep Fracture of an Aluminium Alloy
Emerald Group Publishing | 1960
|