共查询到20条相似文献,搜索用时 46 毫秒
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Xianping Wu Surya R. Kalidindi Carl Necker Ayman A. Salem 《Metallurgical and Materials Transactions A》2008,39(12):3046-3054
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W.H. Jiang H.H. Liao F.X. Liu H. Choo P.K. Liaw 《Metallurgical and Materials Transactions A》2008,39(8):1822-1830
Using an infrared (IR) camera, we observed in situ the dynamical shear-banding processes of the geometrically constrained specimens of a Zr-based bulk metallic glass in a quasi-static
compression at various strain rates, measured the temperature evolutions within the specimens, and calculated the temperature
increases in shear bands. Strain-rate-dependent serrated plastic flow is a result of shear-banding operations. The average
temperature increases in the specimens are observed during the plastic deformation and their magnitudes are strain rate dependent.
The temperature increases in shear bands are related to strain rates. The higher the strain rates, the larger the temperature
increases in a shear band. The shear strain in a shear band may be responsible for the strain-rate-dependent temperature increase
in a shear band.
This article is based on a presentation given in the symposium entitled “Bulk Metallic Glasses IV,” which occurred February
25–March 1, 2007 during the TMS Annual Meeting in Orlando, Florida under the auspices of the TMS/ASM Mechanical Behavior of
Materials Committee.
相似文献
W.H. Jiang (Research Assistant Professor)Email: |
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Laser Processing of Net-Shape NiTi Shape Memory Alloy 总被引:1,自引:0,他引:1
B. Vamsi Krishna Susmita Bose Amit Bandyopadhyay 《Metallurgical and Materials Transactions A》2007,38(5):1096-1103
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M. Ravi Shankar R. Verma B.C. Rao S. Chandrasekar W.D. Compton A.H. King K.P. Trumble 《Metallurgical and Materials Transactions A》2007,38(9):1899-1905
Plane-strain machining can be used to impart large plastic strains in alloys that are difficult to deform by other severe
plastic deformation (SPD) processes. By cutting at low speeds, the heating caused by friction with the tool can be reduced
to insignificant levels. The utility of this approach for characterizing microstructure development in SPD is demonstrated
using a variety of commercial alloys that exhibit different deformation behaviors and strengthening mechanisms, including
CP-titanium, aluminum alloy 6061-T6, nickel-base superalloy IN-718, and pearlitic plain-carbon steel.
This article is based on a presentation made in the symposium entitled “Ultrafine-Grained Materials: from Basics to Application,”
which occurred September 25–27, 2006 in Kloster Irsee, Germany.
相似文献
S. Chandrasekar (Professor)Email: |
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