A textural model for SCC susceptibility in HCP metals (Zircaloy)

Adams, Brent L.; Baty, DL; Murty, K. Linga

doi:10.1016/0036-9748(78)90093-5

Cited by 16 publications

(3 citation statements)

References 5 publications

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“…As the textures and deformation modes are essentially similar in titanium and zirconium materials, the above considerations hold good for zirconium materials also. A recent study (Adams et al 1978) supports this conclusion.…”

Section: Resistance To Environment-aided Fracturementioning

confidence: 64%

Alloy design for fracture resistance

Prasad

Rao

1980

Proc. Indian Acad. Sci. (Engg. Sci.)

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Several methods for improving the strength of metallic materials are available and correlations between strength and various microstructural features have been established. The purpose of this paper is to review parallel developments favouring improved fracture resistance. Resistance to fracture in monotonic loading, cyclic loading and when fracture i s environment-aided have been considered in steels, aluminium alloys and anisotropic materials. Finally, the question of optimising alloy behaviour is discussed.

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Section: Resistance To Environment-aided Fracturementioning

confidence: 64%

Alloy design for fracture resistance

Prasad

Rao

1980

Proc. Indian Acad. Sci. (Engg. Sci.)

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“…This is also evident in the study by Schuster and Lemaignan, 15 who investigated the ductility loss in iodine atmosphere of Zircaloy-4 as a function of the basal peak pole angle (f). A precipitous loss 16 in ductility occurred at f ≥ 35∞ and the thermal treatment (CWSR vs RXA) apparently did not have much impact on the data.…”

Section: Pci-resistant Claddingmentioning

confidence: 91%

“…Adams et al 16 showed the superiority of radial basal texture to cleavage using a quantitative texture analysis in conjunction with appropriate cleavage stress criterion based on the existence of a threshold stress for SCC above which environmentally induced embrittlement occurs. Both crack initiation and propagation were considered to occur when the effective stress normal to the basal plane is greater than a threshold value.…”

Section: Pci-resistant Claddingmentioning

confidence: 99%

LWR pellet-cladding interactions: Materials solutions to SCC

Edsinger

Murty

2001

JOM

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Stress corrosion failure of Zircaloy‐2 sheets in methanolic HCl solution: Role of crystallographic texture

Hebbar

Nayak

Ramchandran

1982

Materials & Corrosion

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The stress corrosion cracking (SCC) characteristics of Zircaloy-2 sheets in methanol-0.4 vol. pct. hydrochloric acid have been studied in the annealed and cold-rolled conditions using longitudinal and transverse specimens. The times to failure for annealed longitudinal specimens were longer than those for similarly tested transverse specimens at stress levels below -45% UTS. The cold-rolled specimens developed resistance to SCC, but failed totally by cleavage when notched, unlike annealed specimens which failed by intergranular initiation followed by cleavage. The crystallographic texture developed by cold rolling is such that the crack initiation is difficult because of quicker passivation characteristics of the crack initiating plane. The texture also gives unfavourable orientation of slip and twinning planes with respect to tensile axis. The crack initiating planes are identified with the help of X-ray pole figures. The apparent activation energy is found to be texture dependent at a given stress level. On the basis of apparent activation energy measurements, dynamic tests at constant cross-head speeds and electrochemical measurements, the mechanism of SCC is identified to be the one involving stress-aided anodic dissolution.Die Spannungsriakorrosion von Zircaloy-2-Blech wurde unter Verwendung von gegliihten und kaltgewalzten, in Langs-und Querrichtung ausgeglichenen Proben in 0,4 Vo1.-% methanolischer Salzsaurelosung untersucht. Die Zeit bis zur RiRbildung war bei den Langsproben langer als bei Querproben unter sonst gleichen Bedingungen (Belastung unter 45% der Zugfestigkeit). Die kaltgewalzten Proben waren zwar gegen SpannungsriRkorrosion bestandig, erlitten jedoch Spaltbruch, wenn sie gekerbt wurden, wahrend die gegliihten Proben ein anfangliches interkristallines RiRstadium mit anschlieflendem Spaltbruch zeigten. Durch das Kaltwalzen wird eine Kristalltextur gebildet, welche die ReiBeinleitung erschwert, da die riRauslosenden Ebenen sich rasch passivieren. Diese Textur enthalt auch Gleit-und Zwillingsebenen mit gegeniiber der Zugachse ungiinstiger Orientierung. Die riaauslosenden Ebenen werden mit Hilfe der Rontgen-Polfiguren identifiziert. Die scheinbare Aktivierungsenergie ist bei gegebener Belastung texturabhangig. Aufgrund der gemessenen scheinbaren Aktivierungsenergie, der dynamischen Untersuchungen mit konstanter Dehnung und der elektrochemischen Messungen wird der Mechanismus der Spannungsriakorrosion als durch Belastung geforderte anodische Auflosung identifiziert.

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A textural model for SCC susceptibility in HCP metals (Zircaloy)

Cited by 16 publications

References 5 publications

Alloy design for fracture resistance

Alloy design for fracture resistance

LWR pellet-cladding interactions: Materials solutions to SCC

Stress corrosion failure of Zircaloy‐2 sheets in methanolic HCl solution: Role of crystallographic texture

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