Creep resistant steels must be reliable over very long periods of time in severe environments. Their mi- crostructues have to be very stable, both in the wrought and in the welded states. This paper reviews the quantitative methods for the design of steels for elevated temperature applications. A methodology is de- scribed for the calculation of complex precipitation reactions over periods extending many tens of years. However, microstructure alone is not enough in the deign of alloys.
展开▼
