QUANTITATIVE RELATIONSHIP BETWEENYIELD STRESS AND r-VALUE OF Ti SHEET

Acta Metall Sin

1991, Vol. 27

Issue (6): 44-49 DOI:

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QUANTITATIVE RELATIONSHIP BETWEENYIELD STRESS AND r-VALUE OF Ti SHEET

ZHOU Weixian Northwestern Polytechnical University; Xi'an

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ZHOU Weixian Northwestern Polytechnical University; Xi'an. QUANTITATIVE RELATIONSHIP BETWEENYIELD STRESS AND r-VALUE OF Ti SHEET. Acta Metall Sin, 1991, 27(6): 44-49.

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Abstract Based on the experimenial data, it was clarified that the plastic strain ratio R-value is not equal to Hill's γ-value for Ti sheet. From the non-quadratic orthotropic yield function proposed recently by the author, an optimal expression between yield stress and γ-value for Ti sheet was developed on overall investigation. The suituble value of exponeat in the function seems to be 6-8. Thus, an equation was suggested to estimate strength for the pressure vessel to be made of Ti sheet.

Key words: Ti sheet yield stress r-value anisotropy

Received: 18 June 1991

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1991/V27/I6/44

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