CHARACTERISTIC OF SURFACE STRENGTHENED LAYER AND FATIGUE STRENGTH OF α-BRASS

Acta Metall Sin

1989, Vol. 25

Issue (1): 62-67 DOI:

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CHARACTERISTIC OF SURFACE STRENGTHENED LAYER AND FATIGUE STRENGTH OF α-BRASS

TAN Yuxu;REN Liping;LI Gang Xi'an Jiaotong University Manuscript received 9 October; 1987; revised Manuscript 11 January; 1988

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TAN Yuxu;REN Liping;LI Gang Xi'an Jiaotong University Manuscript received 9 October; 1987; revised Manuscript 11 January; 1988. CHARACTERISTIC OF SURFACE STRENGTHENED LAYER AND FATIGUE STRENGTH OF α-BRASS. Acta Metall Sin, 1989, 25(1): 62-67.

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Abstract In shot peened α-brass surface layer {111} type planar defects anddeformation microtwins have been observed by means of TEM analysis. Thedensity of microtwins decreases with the increase of layer depth. The enhancementof fatigue strength and the unrelaxation of residual stress after shot peening areconcerned in the substructures of strengthened layer.

Key words: residual stress substructure fatigue

Received: 18 January 1989

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1989/V25/I1/62

1 米谷茂著,朱荆璞,邵会孟译.残余应力的产生和对策,机械工业出版社,1983:278
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3 Murr L E, Staudhammer K P, Hecker S S. Metall Trans, 1982; 13A: 627
4 Howard J. Scr Metall, 1976; 10: 4412

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