Yield loci of 1100 aluminum after various prestrains
- Stanford Univ., CA (USA)
1100 aluminum tubes have been prestrained to an effective strain of 0.035 in different combinations of tension and torsion loading. Subsequent to prestraining the yield loci, defined by 5 {times} 10{sup {minus}6} offset were determined. The authors found that this small strain yield locus develops a rounded corner in the direction of prestrain while opposite the prestrain it flattens, for proportional loading paths. Tubes were also prestrained to the same point in stress space by three different paths, pure tension followed by pure torsion, pure torsion following by pure tension and a proportional ratio of tension and torsion. For these three paths the subsequent yield loci were identical, indicating path independence. Finally these experimental results have been described in terms of an expansion, a translation and a distortion of the original yield locus.
- OSTI ID:
- 5366608
- Report Number(s):
- CONF-840909--
- Journal Information:
- TMS (The Metallurgical Society) Paper Selection; (USA), Journal Name: TMS (The Metallurgical Society) Paper Selection; (USA) Vol. 56; ISSN TMPSA; ISSN 0197-1689
- Country of Publication:
- United States
- Language:
- English
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