Results 241 to 250 of about 52,963 (289)
Influence of sulfur on the processing map for hot working of nickel
Scripta Metallurgica et Materialia, 1992 It is well known that sulfur segregates to grain boundaries in nickel and causes hot shortness [1-3]. At lower sulfnr levels (2-20 ppm), the concentration of sulfur at grain boundaries is sufficient to cause high temperature embrittlement while at higher concentrations, embrittlement occurs even at lower temperatures [2,3]. The aim of the present study
N. Srinivasan, Y.V.R.K. Prasad
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Hot-working characteristics of nichrome and the development of a processing map
Journal of Materials Processing Technology, 1994 A processing map for the hot working of nichrome has been developed on the basis of hot compression data in the temperature range 750-1200 °C and strain-rate range $0.0003-100\hspace{2mm} s^{-1}$. The map exhibits a domain of dynamic recrystallization with a peak efficiency of 38% occurring at 1200 °C and $0.1\hspace{2mm} s^{-1}$, which are the optimum
N. Srinivasan, Y.V.R.K. Prasad
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Processing map for hot working of spray formed and hot isostatically pressed Al–Li alloy (UL40)
Journal of Materials Processing Technology, 2009 The hot deformation behavior of spray formed + HIPed Al-Li (UL40) alloy was studied using processing map technique. The map has been interpreted in terms of the microstructural processes occurring in situ with deformation, based on the values of a ...
Amol A Gokhale, B P Kashyap
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Hot formability of the 2124/SiCp investigated by processing map
, 2001 The hot working behaviour of aluminium composites reinforced with SiC particles (26vol. %) has been studied by the Process Map method. Temperatures ranging from 300°C to 525°C and strain rates ranging from 0.001 s-1 to 0.1 s-1 have been used. In particular the map calculated at 0.5 true plastic strain shows two domains which are considered safe for hot
G. M. La Vecchia +2 more
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Numerical reliability of hot working processing maps
Materials Science and Engineering: A, 2002The extensive use of hot working processing maps witnessed in the literature calls for a critical evaluation of the relevant data analysis procedures. Data elaboration procedures are shown to have a critical bearing on the structure of the maps. The single most critical point lies in the numerical estimate of second derivatives.
BOZZINI, Benedetto, CERRI, Emanuela
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Hot Deformation Behavior and Hot Processing Map of P92 Steel
Advanced Materials Research, 2010Hot-compression and hot-tension experiments were conducted on a Gleeble-1500D thermal-mechanical simulator. The constitutive equation was presented by calculating the stress exponent, activation energy and Zemer-Hollomon parameter during the hot compression.
Shu Li Sun, Min Gang Zhang, Wen Wu He
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Processing map and hot working mechanisms of Cu-Ag alloy in hot compression process
Journal of Central South University, 2015For Gu-Ag alloy, an important parameter called workability in the forming process of materials can be evaluated by processing maps yielded from the stress-strain data generated by hot compression tests at temperatures of 700–850 °C and strain rates of 0.01–10 s−1. And at the true strain of 0.15, 0.35 and 0.55, respectively, the responses of strain-rate
Meng-han Wang +3 more
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Processing maps for hot working of titanium alloys
Materials Science and Engineering: A, 1998In recent years, processing maps are being used to design hot working schedules for making near-net shapes in a wide variety of materials. In this paper, the results obtained on the characterization of hot working behavior of titanium and its alloys using the approach of processing maps are described.
Y.V.R.K. Prasad, T. Seshacharyulu
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Hot deformation behaviour and hot processing map of 316LN‐Nb stainless steel
Materials Research Innovations, 2011AbstractThe hot deformation behaviour of 316LN‐Nb stainless steel was investigated at 900–1250°C and strain rates of 0·005–5 s–1 by hot compression tests on a Gleeble‐1500D thermo‐mechanical simulator. The constitutive equation of 316LN‐Nb steel was determined by calculating the stress exponent, activation energy and Zemer‐Hollomon parameter.
W He, J Liu, S Sun, H Chen, H Guo
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The Hot Deformation Behavior and Hot Processing Map of CL60 Rail Wheel Steel
Advanced Materials Research, 2012The hot deformation behavior of CL60 rail wheel steel has been studied by employing both processing maps and microstructural observations. Tests are performed at temperatures of 800—1100°C and strain rates of 0.1s-1—5s-1 and the flow stress data obtained from the tests are used to develop processing maps.
Fei Zhao, Yan Yan, Yong Hai Ren
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