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Creep and Other Properties of Zinc-copper-titanium Alloys Annealed After Rolling.

Neumeier LA; Risbeck JS

NTIS: PB 210 984 :31 pages

10008882

The Bureau of Mines evaluated creep properties of zn-cu-ti alloys that were annealed after finish rolling, either cold or at 480 deg f (249 deg c). Compositions ranged up to 1.25 pct cu and 0.36 pct ti. Most data are for sheet annealed after finish rolling to 92-pct total reduction. Annealing times were varied at temperatures between 320 deg and 560 deg f (160 deg and 293 deg c). For a number of the alloys, annealing after hot rolling at 480 deg f affects creep properties very differently in longitudinal and transverse sheet directions. The detrimental result is that the anisotropy in creep properties between the two directions can be vastly increased. Conversely, specific annealing treatments of certain heavily cold- rolled alloys result in surprisingly low anisotropy in creep properties and the low anisotropy coincides with excellent creep resistance for both directions. Supplemental data are presented on tensile, hardness, and thermal expansion properties and microstructures.

19720101

IH; Report of Investigation;

1972

PB-210984

A04

RI 7643

RORC;

NTIS: PB 210 984