PLASTIC DEFORMATION PROPAGATION CHARACTERISTIC OF METALS UNDER CYCLIC LOADING

Acta Metall Sin

1995, Vol. 31

Issue (8): 351-355 DOI:

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PLASTIC DEFORMATION PROPAGATION CHARACTERISTIC OF METALS UNDER CYCLIC LOADING

FENG Zhongxin;ZHANG Jianzhong; YANG Jian jun; CHEN Xinzeng1) Xi＇an Jiaotong University;Xi＇an 710049)(2) Ningbo College; Ningbo 315010)

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FENG Zhongxin;ZHANG Jianzhong; YANG Jian jun; CHEN Xinzeng1) Xi＇an Jiaotong University;Xi＇an 710049)(2) Ningbo College; Ningbo 315010). PLASTIC DEFORMATION PROPAGATION CHARACTERISTIC OF METALS UNDER CYCLIC LOADING. Acta Metall Sin, 1995, 31(8): 351-355.

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Abstract The plastic deformation propagation speeds of steels are determined by using photo-elastic coating and high speed photography method.The results indicate that the plastic deformation propagation speed of metal under cyclic loading is related to not only internal factors of crystal lattice and microstructure etc, but also external factors, such as loading frequency, stress concentration etc. The plastic deformation propagation speed of 1Cr18Ni9Ti stainless steel with face-centred cubic lattice is greatly higher than that of 40Cr steel with body-centred cubic lattice. In essence. critical loading speed effect should be connected with the plastic deformation propagation speed of metal.FENG Zhongxin,associate professor, Xi＇an Jiaotong University, Xi＇an 710049

Key words: cyclic loading plastic deformation propagation microstructure loading fre quency stress concentration

Received: 18 August 1995

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1995/V31/I8/351

1DavidsonDL,LindholmUS,YeakleyLM．ActaMetallurgica,1966;14:7032KuhnleV,RiedelH．IntJFract,1987;34:1793横堀武夫．日本材料强度学会志,1985;19(3):674黄明志,石德珂,金志浩．金属力学性能．西安:西安交通大学出版社,1986:23

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