STRESS RELAXATION BEHAVIOUR OF TITANIUM

Acta Metall Sin

1989, Vol. 25

Issue (2): 5-9 DOI:

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STRESS RELAXATION BEHAVIOUR OF TITANIUM

XIA Yuebo;WANG Zhongguang Institute of Metal Research; Academia Sinica; Shenyang

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XIA Yuebo;WANG Zhongguang Institute of Metal Research; Academia Sinica; Shenyang. STRESS RELAXATION BEHAVIOUR OF TITANIUM. Acta Metall Sin, 1989, 25(2): 5-9.

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Abstract Stress relaxation study of commercial pure titanium under tensile de-formation shows that the stress relaxation behaviour of it relates to the level ofdeformation. The relaxed stress △σ is independent of amplitude of stress dip in therange of certain deformation, and it is dependent of stress level at beginning ofstress relaxation in determined relaxation time t_R. The back (critical) stress σ_c andflow stress σ_c exhibit same change with the strain. The effective stress at the dislo-cation in materials σ~* increases with increasing strain ranging under low strain, andkeeps constant under higher strain.

Key words: stress relaxation critical stress effective stress relaxed stress

Received: 18 February 1989

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1989/V25/I2/5

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