The Effects of Metallurgical Factors on Fatigue Strengths : Part 1,The Effects of Carbon and the Relations between Static Strengths and Fatigue Strengths

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概要

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• The purpose of this investigation if to clarify the effects of alloying elements and heat treatments on fatigue strengths of steels quantitatively with correlation equations among the fatigue limit, static strength and metallurgical factors.On the analogy with the case of static strengths, a regression equation is assumed between the fatigue limit and the amount of alloying elements, and effects of carbon and heat treatments are described in this report.There exists a more general relationship between σ_w and σ_s than between σ_w and σ_B. It can be written as foloows; σ_w(α, T)=K(e_1,α, T)σ_s(T)+H(e, α, T). H is a function of alloying elements e, stress concentration factor α and heat treatment T. If carbon is taken as e_1,one of the alloying elements, K is nearly constant within a broad range of heat treatments.

• 一般社団法人日本機械学会の論文

著者

• Nishioka Kunio

  Central Research Laboratories

• Nishioka Kunio

  Central Research Lagoratories Sumitomo Metal Industries Ltd.

• NISHIKAWA Tomio

  Central Research Laboratories, Sumitomo Metal Industries, Ltd.,

• Nishikawa Tomio

  Central Research Laboratories Sumitomo Metal Industories Ltd.

関連論文

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• Fundamental Investigations of Fretting Fatigue : Part 4,The Effect of Mean Stress
• Fundamental Investigations of Fretting Fatigue : (Part 5,The Effect of Relative Slip Amplitude)
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• Strength of Integral Pipe Flanges : No.1 Stress Distribution in Flange and the Criticism of the Conventional Standards
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• Research on the Reinforcement with a Rib : (6th Report, The Deformation of Structural Parts Reinforced with Ribs where the Cross Sections of Two Intersecting Members Are Different in Rigidity)
• Fatigue Strengths of Shafts with Press-fitted Collar
• The Effects of Metallurgical Factors on Fatigue Strengths : Part 1,The Effects of Carbon and the Relations between Static Strengths and Fatigue Strengths
• The Effects of Metallurgical Factors on Fatigue Strength : Part 3, The Effects of C, Si, Mn, P and Cu (2)
• Researches on Increasing the Fatigue Strength of Press-Fitted Shaft Assembly
• The Effects of Metallurgical Factors on Fatigue Strength : Part 4, The Effects of N and B
• The Effects of Metallurgical Factors on Fatigue Strength : Part 5, The Effects of Ni, Cr and Mo (1)
• The Effects of Metallurgical Factors on Fatigue Strength : Part 2, The Effects of C, Si, Mn, P and Cu (1)
• The Strength of Railroad Wheels : 2nd Report, The Effect of Wheel Contours on Thermal Stresses in Wheels
• A Fractographic Study of Fatigue Fracture of AISI 4340 Steel

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