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5. Glossary
calefaction; calefaction
During quenching, a layer of vapor is formed on the surface of the metal, which cools the workpiece less effectively than liquid water.
relaxation; stress relief anneal
Low-temperature annealing (typically 450 – 500°C) to reorganize dislocations at microstructural level, reduce residual stresses and soften the material mechanically.
cold-working
Cold forming by any process (rolling, drawing, pilgrim rolling, etc.). Hardening introduces microstructural dislocations that harden the material and reduce its ductility.
recrystallization; recrystallization
Anneal at sufficient temperature to completely eliminate dislocations created by work hardening.
texture cristallographique;...
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Standardization
Most standards for zirconium and hafnium metal products, or alloys, are American ASTM standards. A few French standards also exist. Few standards concern hafnium.
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French standards
- Corrosion of metals and alloys – Aqueous corrosion testing of zirconium alloys used in nuclear reactors. - NF EN ISO 10270 - Juillet 2008
- Description and qualification...
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