Lead induced intergranular fracture in aluminum alloy AA6262

Abstract

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In-situ observation of the fracture process in Al–Zn–Mg–Cu alloys

“…All the samples that fracture predominantly in a transgranular way show also some regions of intergranular fracture, as observed in Ref. [3] for Al alloys with dominant transgranular fracture. However, flat intergranular areas ( Fig.…”

“…If, however, the strain in the PFZ is high enough to cause decohesion of the grain boundary precipitates, these voids may coalesce resulting in intergranular microvoid coalescence. It is belived that a high hydrostatic stress promotes the growth of existing voids and thereby increases the probability for intergranular microvoid coalescence to occur [3,40]. Consequently, alloy 1 having the lowest Zn and Mg levels shows the lowest strength and greater proportion of intergranular fracture (see Table 2).…”

Environmental degradation of structural materials in liquid lead- and lead-bismuth eutectic-cooled reactors

“…If this is a valid assumption, twinning is another important factor promoting plasticity and, thus, inhibiting LME. Nevertheless, excellent ductility may not be exclusively responsible for the weak LME effect in AuSS, as many other solid metals with good ductility can be embrittled by certain liquid metals, such as Al/Ga [388][389][390][391][392], Cu/Bi [425], Ni/Bi [426], AA6262 Al alloy/Pb [561] couples, etc.…”

Degradation of TiB2 ceramics in liquid aluminum

“…A change of fracture mode from transgranular to intergranular due to Pb infiltration in an Al alloy has also been reported. 30 …”