Effect of Shearing Distance on Mechanical and Electrical Properties for Cu-11Mn-4Ni Thin Plate Formed by Compression Shearing Method at Room Temperature

Abstract:

ince the temperature coefficient of resistance of Manganin (Cu-12Mn-2Ni) is extremely small, Manganin plate are used for resistors, especially shunts for current sensing.Generally, the melting and casting is used as a method to make an alloy such as Manganin. Further, the Manganin used as resistive material is produced by rolling after casting. Since such manufacturing processes have heating steps, long molding time is necessary and temperature control is important.In recent years, Cu-11Mn-4Ni powder has been developed. If manganin plate can be produced directly from alloy powder, simplification of the manufacturing process can be expected. A powder metallurgy is used as a method of solidifying and shaping the alloy powder. However many pores are generated in the sample because of using a binder. Therefore, the resistance value of the alloy fabricated through the method may not be stable.The Compression Shearing Method at Room Temperature (COSME-RT) is one of solutions to achieve the high density forming. In COSME-RT alloy powders are simultaneously loaded by a shearing force and a compressive stress in air at room temperature to form a plate. In the process, temperature control is unnecessary and the manufacturing time becomes shorter.In the present study, the fabrication of Cu-11Mn-4Ni plate is carried out by compression shearing method at room temperature and mechanical and electrical properties of the plate are evaluated.

• Periodical: Materials Science Forum (Volume 941)
• Pages: 1517-1522
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.941.1517
• Online since: December 2018
• Authors: Noboru Nakayama, Hayato Inoue, Hideharu Kusunoki, Masaomi Horita, Yoshitaka Kumeda, Keishi Nakamura
• Keywords: Composite Material, Density, Electrical Properties, Hardness, Manganin, Mechanical Properties, Plastic Deformation, Powder Metallurgy

References

[1] H.Takeishi. N. Nakayama, H. Miki. Consolidation with Grain Refinement by Compression Shearing Method under Room Temperature, J.Soc.Mat.Sci in jpn, 54-3, (2005), 233-238.

DOI: 10.2472/jsms.54.233

[2] H. Miki, N. Nakayama, H. Takeishi: Dynamic Molding of Powder Particles at Room Temperature, Materials Science Forum. 706-709, (2012), 1955-1960.

DOI: 10.4028/www.scientific.net/msf.706-709.1955

[3] T. Saito, H. Sato, H. Takeishi, and Noboru Nakayama, Consolidation of Nd-Fe-B melt-spun ribbon by compression shearing method, Journal of applied physics 101, (2007) 09K503.

DOI: 10.1063/1.2709415

[4] T. Saito, H. Sato, H. Takeishi, N. Nakayama, Anisotropic Sm–Fe–N magnets produced by compression shearing method,, Applied Physics Letters, 89, 16, (2006) 162511-1-162511-3.

DOI: 10.1063/1.2362589

[5] T. Saito, H. Takeishi, N. Nakayama: Production of Bulk Nanocomposite Magnets of An Nb4Fe77.5B18.5 Alloy by Compression Shearing Method, IEEE Transaction on Magnetics, 41, 10, (2005) 3781-3783.

DOI: 10.1109/tmag.2005.854695

[6] T. Saito, H. Takeishi, N. Nakayama: Production of amorphous bulk material of an Nb15Fe77B8 magnetic alloy by the compression shearing method, Journal of Alloys and Compounds, 396, (2005) 208-211.

DOI: 10.1016/j.jallcom.2004.12.040

[7] T. Saito, H. Takeishi, N. Nakayama: New method for the production of bulk amorphous materials of Nb15-Fe77-B8 alloys, J. Mater. Res., 20, 3, Mar, (2005) 563-566.

DOI: 10.1557/jmr.2005.0098

[8] N. Tsuji, Y. Ito, Y. Saito, Y. Minamino. Strength and ductility of ultrafine grained aluminum and iron produced by ARB and annealing, Scripta Mater, 47 (2002) 893-899.

DOI: 10.1016/s1359-6462(02)00282-8

[9] D. Terada, S. Inoue, N. Tsuji. Microstructure and mechanical properties of commercial purity titanium severely deformed by ARB process, J. Mater. Sci, 42 (2007), 1673-1681.

DOI: 10.1007/s10853-006-0909-7

[10] E.O. Hall, The Deformation and Ageing of Mild Steel : II, Proc. Phys. Soc, B 64 (1951), 742-747.

DOI: 10.1088/0370-1301/64/9/302

[11] N.J. Petch, The cleavage strength of polycrystals, J. Iron Steel Ins,. 174 (1953), 25-28.