The effect of room temperature prestrain on the yield stress of single crystals of {gamma}{prime} in the anomalous regime
Conference
·
OSTI ID:72466
- Univ. of Oxford (United Kingdom). Dept. of Materials
The object of this paper is to report on experiments on single crystals of L1{sub 2}Ni{sub 3}(Al,Hf)B, cut from a large crystal kindly supplied by Dr. P.M. Hazzledine. The yield stress of a specimen prestrained at 294 K increases only slowly or is constant up to a temperature above which the yield stress of a virgin specimen is greater. Above that temperature, the yield stress tends to increase as for a virgin crystal. For sufficiently high prestresses, the yield stress anomaly disappears completely. The results are interpreted in terms of a model in which the operation of Frank-Read sources is rate controlling.
- OSTI ID:
- 72466
- Report Number(s):
- CONF-941144--; ISBN 1-55899-265-0
- Country of Publication:
- United States
- Language:
- English
Similar Records
Yield behavior of a mild steel after prestraining and aging under reversed stress
The strain rate and prestrain dependences of the flow stress of Ni{sub 3}Ga single crystals
Yield stress reversibility and the operation of Frank-Read sources in L1{sub 2} alloys in the anomalous regime for (111) slip
Journal Article
·
Sun Jan 31 23:00:00 EST 1999
· Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science
·
OSTI ID:316046
The strain rate and prestrain dependences of the flow stress of Ni{sub 3}Ga single crystals
Journal Article
·
Thu Oct 31 23:00:00 EST 1996
· Acta Materialia
·
OSTI ID:415428
Yield stress reversibility and the operation of Frank-Read sources in L1{sub 2} alloys in the anomalous regime for (111) slip
Conference
·
Tue Aug 01 00:00:00 EDT 1995
·
OSTI ID:78303