Acta Metall Sin  1998, Vol. 34 Issue (3): 242-248    DOI:

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MACROSCOPIC RESPONSE AND MICROSCOPIC MECHANISM OF ZIRCALOY-4 UNDER NONPROPORTIONAL LOADING

XIAO Lin(State Key Laboratory for Mechanical Behaviour of Materials; Xi'an Jiaotong University; Xi'an 710049)KUANG Zhenbang(Department of Engineering Mechanics; Shanghai Jiaotong University; Shanghai 200030)

XIAO Lin(State Key Laboratory for Mechanical Behaviour of Materials; Xi'an Jiaotong University; Xi'an 710049)KUANG Zhenbang(Department of Engineering Mechanics; Shanghai Jiaotong University; Shanghai 200030). MACROSCOPIC RESPONSE AND MICROSCOPIC MECHANISM OF ZIRCALOY-4 UNDER NONPROPORTIONAL LOADING. Acta Metall Sin, 1998, 34(3): 242-248.

Abstract References Related Articles Recommended Metrics Download:  PDF(2262KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Monotonic and cyclic plastic deformation behaviour and microscopic mechanism of zircaloy-4 under biaxial tension loading along different loading paths were investigated. The results show that an obvious stress delay appears in comparison with the strain increment vector after the turning point of a strain path. The equivalent stress suddenly drops then increases, and the firstly softening and subsequently haxdening degrees are related to the turning angle values,the path length and turning direction. Therefore, the influence of the deformation history and the coupled effects among strain components on the response can not be neglected. By TEM, the deformed dislocation configurations are parallel dislocation lines in uniaxial tension with constraint condition, a lot of free dislocation lines between channeals in double-triangle, and embryonic cells in elliptical and circular loading, respectively. The correlation between macroscopic deformation behaviour and microscopic deformation structure is discussed, finally. Key words:  zircaloy-4      nonproportional loading      constitutive equation      microscopic mechanism      dislocation structure      Received:  18 March 1998      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1998/V34/I3/242 1 著,吕允文,高绣雯译核工程材料北京:原子能出版社,1987write, Lu Yunwen, Gao Xiuwen translate. Materiais in NuclearEngineeriny. Beijing: Atom Publisher, 1987) 2肖林.复合加载下材料塑性变形行为及其微观机理西安交通大学博士后研究报告,1996(Xiao Lin. Plastic Deformation Behavior and Mcroscopic Mechanism of Materials Under Combined Loading. Postdoctor Thesis, Xi'an Jiaotong University, 1996) 3 Valanis K C. Areh Mech, 1980; 32:171 4 Xiao Lin, Kuang Zhenbang. Acta Maten 1996; 44: 3059 5 Doong S H, Socie D F, Robertson I M. ASME J Eng Mater Technol, 1990; 112: 456 6 McDowell D L. J Mech Phys Solids, 1985; 33: 559 7 Doong S H, Socie D F. ASME i Eny Mater Technol, 1991; 113: 23 8 肖林. 中国钼业,1997; 21: 30(Xiao Lin. Chin Molybdenum Ind, 1997; 21: 30) 9 Xiao Lin, Gu Haicheng, Kuang Zhenbang. Acta Metall Sin (Engl Lett), 1995; 8: 219 10 Xiso Lin, Gu Haicheng. Scr Metall Mater, 1994; 30: 175 11 Xiso Lin, Gu Haicheng. Metall Mater Trans, 1997; 28A: 1021 12 Miura S, Umeda K. Scr Metall, 1973; 7: 337 [1] WANG Kai, JIN Xi, JIAO Zhiming, QIAO Junwei. Mechanical Behaviors and Deformation Constitutive Equations of CrFeNi Medium-Entropy Alloys Under Tensile Conditions from 77 K to 1073 K[J]. 金属学报, 2023, 59(2): 277-288. 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