Abstract
Large strain deformation, a key parameter in microstructure refinement by Severe Plastic Deformation (SPD) processes, is a common feature of chip formation in machining. It is shown that the imposition of large plastic strains by chip formation can create metals and alloys with nanocrystalline or ultra-fine grained microstructures. The formation of such nanostructured materials is demonstrated in a wide variety of material systems including pure metals, light-weight aluminum alloys, and high strength steels and alloys. Nanocrystalline microstructures with different morphologies are demonstrated. The hardness and strength of the nanostructured chips are significantly greater than that of the bulk material. The production of nanostructured chips by machining, when combined with comminution and powder processing methods, may be expected to lead to the creation of a number of advanced materials with new and interesting combinations of properties. These materials are expected to find wide-ranging applications in the discrete products sector encompassing ground transportation, aerospace and bio-medical industries.
Reference11 articles.
1. Embury J. D. , and FisherR. M., 1966, “Structure and Properties of Drawn Pearlite,” Acta Metallurgica, 14, pp. 147–159.
2. Langford G. and CohenM., 1969, “Strain Hardening of Iron by Severe Plastic Deformation,” Transactions of ASM, 62, pp. 623–638.
3. Hughes D. A. , and HansenN., 1993, “Microstructure Evolution in Nickel During Rolling from Intermediate to Large Strains,” Metallurgical Transactions A, 24, pp. 2021–2037.
4. Segal V. M. , ReznikovV. I., DrobyshevskiyA. E., and KopylovV. I., 1981, “Plastic Working of Metals by Simple Shear,” Russian Metallurgy, 1, pp. 99–105.
5. Valiev R. Z. , IslamgalievR. K., and AlexandrovI. V., 2000, “Bulk Nanostructured Materials from Severe Plastic Deformation,” Progress in Materials Science, 45, pp. 103–189.
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献