Crystallographic fatigue crack growth in nimonic AP1

King, J.E. (1981). Crystallographic fatigue crack growth in nimonic AP1. Fatigue of Engineering Materials and Structures, 4 (4), pp. 311-320.

Abstract

Recently a controversy has developed over whether crystallographic crack growth near threshold in nickel-base superalloys occurs along right brace 111 left brace slip planes or right brace 100 left brace planes at room temperature. In this work crack propagation is shown to occur on both right brace 100 left brace and right brace 111 left brace planes. The most common facet plane is right brace 111 left brace and this is the only orientation observed at the lowest stress intensities, but at higher stress intensities occasional right brace 100 left brace facets are also produced. This behavior is compared with similar results in aluminum alloys.

Publication DOI: https://doi.org/10.1111/j.1460-2695.1981.tb01128.x
Divisions: Aston University (General)
Uncontrolled Keywords: microstructures metallography,microscopic examination,crack propagation nickel and alloys,thermal effects powder metallurgy,superalloys stresses,crystals
Published Date: 1981-10

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