On the Elastic Anisotropies and its Temperature Change of Single Crystals of High Elasticity Alloy “Dia-flex” in the Co-Fe-Ni-Cr-W-Mo System

Masumoto Hakaru, Saitô Hideo, Kikuchi Michio

doi:10.2320/jinstmet1952.31.3_263

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高弾性合金“Dia-flex”単結晶の弾性係数の異方性ならびにその温度変化
コウダンセイゴウキン Dia-flex タンケッショウノダンセイケイスウノイホウセイナラビニソノオンドヘンカ
On the Elastic Anisotropies and its Temperature Change of Single Crystals of High Elasticity Alloy “Dia-flex” in the Co-Fe-Ni-Cr-W-Mo System

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The thermal expansion in the temperature range of 0° to 800°C, Young’s modulus in the temperature range of −50° to 300°C, rigidity modulus in the temperature range of 10° to 50°C and the mechanical strength at room temperature in a high elasticity alloy of F.C.C. type “Dia-flex” consisting of 38.0%Co, 22.4%Fe, 16.5%Ni, 12.0%Cr, 4.0%W, 4.0%Mo and small amounts of other elements were measured with the single crystals and annealed poly-crystals (in the predominant direction ⟨112⟩(1\bar10): Young’s modulus 23.00×10⁵ kg/cm², elastic limit 120 kg/mm² and tensile strength 250 kg/mm²). Then, from the data obtained, the volume compressibility, the principal elastic parameters S_ij, the principal elastic constants C_ij, and Young’s modulus and the rigidity modulus in three principal orientations of the single crystals were calculated. From the result it has been known that Young’s moduli at 20°C are 11.68×10⁵ kg/cm², 22.49×10⁵ kg/cm² and 33.78×10⁵ kg/cm², and the rigidity moduli at 20°C, 12.01×10⁵ kg/cm², 5.93×10⁵ kg/cm² and 5.33×10⁵ kg/cm² respectively in the orientations of ⟨100⟩, ⟨110⟩ and ⟨111⟩ of the single crystals, showing high anisotropies of elastic moduli. The anisotropy of the temperature coefficients of elastic moduli is also very high.

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Journal of the Japan Institute of Metals and Materials

Journal of the Japan Institute of Metals and Materials 31 (3), 263-268, 1967

The Japan Institute of Metals and Materials

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