Location

Snowmass Village, CO

Start Date

1-1-1995 12:00 AM

Description

Creep damage is the slow plastic flow of metal under stress and at high temperature, typically about 50% of the absolute melting temperature. The result is a very slow viscous flow of the metal which ends in sudden failure. This problem occurs in alloy steels that have been used in steam generators, turbines, and pipelines in power plants operating at high temperatures, typically in the range 500°–600°C, and under stress for an extended period of time. Creep failure occurs by a process of cumulative damage which involves plastic deformation, nucleation and growth of cavities at the grain boundaries, subsequent linkage of these cavities to form microcracks, and the propagation of these microcracks until failure.

Volume

14B

Chapter

Chapter 6: Material Properties

Section

Magnetic Materials

Pages

1701-1707

DOI

10.1007/978-1-4615-1987-4_218

Language

en

File Format

application/pdf

Share

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Jan 1st, 12:00 AM

Detection of Creep in CR-MO Steel by Magnetic Hysteresis Measurements

Snowmass Village, CO

Creep damage is the slow plastic flow of metal under stress and at high temperature, typically about 50% of the absolute melting temperature. The result is a very slow viscous flow of the metal which ends in sudden failure. This problem occurs in alloy steels that have been used in steam generators, turbines, and pipelines in power plants operating at high temperatures, typically in the range 500°–600°C, and under stress for an extended period of time. Creep failure occurs by a process of cumulative damage which involves plastic deformation, nucleation and growth of cavities at the grain boundaries, subsequent linkage of these cavities to form microcracks, and the propagation of these microcracks until failure.