International Metallurgical Reviews Template

A. A. Wells · 1 Jan 1972

Gernot H. Gessinger, M. J. Bomford · 1 Jan 1974

Nickel-chromium and, to a lesser extent, cobalt-chromium alloys are the major class of materials used for the high temperature components of aircraft, marine, and land-based power systems and are also utilized in applications, such as hot-working tools and dies. The successful application of these alloys, now commonly termed ‘superalloys’, is due to their high, long-time…

C.M. Sellars, W. J. McG. Tegart · 1 Jan 1972

Hot workability relates to the ability of a metal or alloy to be deformed under conditions of high temperature (> O.6Tm, where Tm is the melting temperature in degrees Kelvin) and relatively high strain rates (10 -1 to 10 3 S -1 ). The two characteristics that govern hot workability are strength and ductility. In…

G. J. Davies, Jason Garland · 1 Jan 1975

To an increasing extent the wide range of fundamental knowledge of solidification processes is being applied to the study of fusion-weld solidification. Initially this fundamental knowledge is surveyed concisely and those areas of particular importance to weld-pool solidification are indentified. This is followed by an examination of phenomenological studies of the solidification behaviour of fusion…

S. Mahajan, D. F. Williams · 1 Jun 1973

Slip and twinning are the two fundamental modes by which metals and alloys can deform plastical1y. Slip occurs when crystal planes glide past each other. This is achieved by the passage of dislocations on different glide planes. Since the Burgers vector of the glide dislocations is always a lattice vector, the atoms during the slip…