Deformation behavior of 4;Mo alloys |
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| Affiliation: | 1. Warsaw University of Technology, Faculty of Materials Science and Engineering, Woloska 141 street, 02-507 Warsaw, Poland;2. Bialystok University of Technology, Faculty of Mechanical Engineering, Wiejska 45C street, 15-351 Bialystok, Poland;1. Saarland University, D-66123 Saarbrücken, Germany;2. Saarland University, D-66123 Saarbrücken, Germany;3. German Research Center for Artificial Intelligence (DFKI), D-66123 Saarbrücken, Germany |
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| Abstract: | Five polycrystalline nickel-molybdenum single-phase alloys (up to 10 at.% Mo) and pure nickel (INCO 270) were tested in compression at two temperatures. The molybdenum solutes contribute not only an additive friction stress, but also a multiplicative effect on the strain-hardening rate. This multiplicative effect is interpreted in terms of an influence of mobile solutes on the dislocation/dislocation interaction strength. Solute mobility was evidenced by the occurrence of static strain aging and of a strain-rate sensitivity that has a negative contribution. The total rate sensitivity, however, remained positive and jerky flow was not observed. |
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