On the Fractography of Transgranular Stress Corrosion Failures in a Mg-Al Alloy

Autor:	E. N. Pugh, D. G. Chakrapani
Rok vydání:	1975
Předmět:	Materials science General Chemical Engineering Alloy Ultimate tensile strength Metallurgy engineering General Materials Science Cleavage (crystal) Fractography General Chemistry engineering.material Corrosion
Zdroj:	CORROSION. 31:247-252
ISSN:	1938-159X 0010-9312
DOI:	10.5006/0010-9312-31.7.247
Popis:	A fractographic study has been carried out on transgranular stress-corrosion cracks produced in both tensile and bend specimens of a Mg-7.5 Al alloy tested in an aqueous NaCl-K2CrO4 solution. It is concluded that the complex fractography reported in earlier papers is fully consistent with the view that failure occurs basically by cleavage on planes. Thus the coarse markings reported previously are shown to correspond to a stepped or pfeated topography consisting of alternate faces produced by cleavage and ductile rupture parallel to (0001), the latter exhibiting flutings of the type observed in other HCP alloys. The reasons for the occurrence of the ductile component are discussed.
Databáze:	OpenAIRE
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