A series of ingots was produced containing varying quantities of hydrogen and non-metallic (oxide) inclusions from melts of super purity aluminium. The incidence of blistering in sheet and foil was evaluated in terms of hydrogen content, melt cleanliness, thermomechanical treatment, and lubrication during rolling. Tensile properties were used to monitor the quality of the material. The importance of low hydrogen and inclusion contents and of maintaining a good surface quality during processing and the necessity for lubricant removal before annealing have been established as crucialfactors in the avoidance of blistering.
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References
1.
JORDANM. F., DENVERG. D., and TURNERA. N.: J. Inst. Met., 1962 –63, 91, 48.
2.
TALBOTD. E. J. and GRANGERD. A.: ibid., 1963 –64, 92, 290.
3.
KERTHW., AMANNE., RÁBERX., and WEBERH.: hit. Metall. Rev., 1975, 20, 185.
4.
BRANTM. V., BONED. C., and EMLEYE. F.:J.Met., March1971, 23, 48.
5.
CELIKM. C.: PhD thesis, University of Birmingham, 1978.
6.
HEDJAZIDJ., BENNETTG. H. J., and KONDICV.Met. Technol., 1976, 3, 537.
7.
KOSTRONH.: Z. Metallkd., 1952, 43, 269.
8.
TALBOTD. E. I.: Int. Metall. Rev., 1975, 20, 166.
9.
ENGLISHA. T.: J. Met., April 1965, 17, 395.
10.
HESSP. D. and TURNBULLG. K.: ‘Hydrogen in metals‘, 277–287; 1974, New York, American Society for Metals.
