Mechanical behavior of fine-grained Mg-6.5Li at elevated temperature
- 1 June 1994
- journal article
- Published by Springer Nature in Journal of Materials Research
- Vol. 9 (6) , 1392-1396
- https://doi.org/10.1557/jmr.1994.1392
Abstract
A Mg-6.5 wt. % Li alloy containing 80% hep alpha phase and 20% bcc beta phase was processed to achieve an average grain size of 5.9 μm. Strain-rate-change tests were performed in the temperature range from 398 K to 573 K. Two types of creep behavior were observed. A stress exponent of five, obtained at low temperatures and high stresses, is attributed to a diffusion-controlled dislocation creep process in the alpha matrix. A stress exponent of three, obtained at high temperatures and low stresses, is attributed to a solute-drag controlled dislocation creep process in the alpha matrix.Keywords
This publication has 9 references indexed in Scilit:
- The activation energy for lattice Self-Diffusion and the Engel-Brewer TheoryMetallurgical Transactions A, 1992
- Superplastic behavior of a fine-grained Mg–9Li material at low homologous temperatureJournal of Materials Research, 1992
- Superplasticity and Newtonian-viscous flow in fine-grained class I solid solution alloys.ISIJ International, 1991
- Superplastic behavior of a fine-grained two-phase Mg-9wt.%Li alloyMaterials Science and Engineering: A, 1990
- Diffusion-controlled dislocation creep: a defenseActa Metallurgica, 1979
- Superplasticity in the Aluminium–Zinc EutectoidMetal Science Journal, 1969
- Interdiffusion in α-Solid Solution of the Fe-Al SystemJournal of the Japan Institute of Metals and Materials, 1968
- Mechanical behavior of crystalline solids at elevated temperatureProgress in Materials Science, 1968
- Quantitative size-factors for metallic solid solutionsJournal of Materials Science, 1966