Acta Metall Sin  1997, Vol. 33 Issue (10): 1009-1014    DOI:

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EFFECTS OF CRYSTAL ORIENTATION AND LOAD MODE ON FATIGUE BEHAVIOR IN Ni_3Al ALLOY SINGLE CRYSTALS

ZHANG Guangping;WANG Zhongguang (State Key Laboratory for Fracture and Fatigue of Materials; Institute of Metal Research; Chinese Academy of Sciences;Shenyang 110015)

ZHANG Guangping;WANG Zhongguang (State Key Laboratory for Fracture and Fatigue of Materials; Institute of Metal Research; Chinese Academy of Sciences;Shenyang 110015). EFFECTS OF CRYSTAL ORIENTATION AND LOAD MODE ON FATIGUE BEHAVIOR IN Ni_3Al ALLOY SINGLE CRYSTALS. Acta Metall Sin, 1997, 33(10): 1009-1014.

Abstract References Related Articles Recommended Metrics Download:  PDF(2485KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Fatigue tests under nominal I and mixed modeⅠ/ Ⅱ loading were carried out on Ni3Al alloy single crystals. The effects of crystal orientation and load mode on the fatigue cracking behavior were studied. It was found that the crack paths are dependent on both crystal orientation and applied load mode. Fatigue cracking in single crystals under mixed mode Ⅰ/ Ⅱ loading always occurs on the planes with maximum resolved shear stress rather than on those with maximum normal stress. The cracking behavior predicted by main mixed mode criteria in polycrystalline materials under a mixed mode can be explained from the present results. Key words:  crystal orientation      mixed mode loading      Ni_3Al alloy single crysta1      fatigue cracking      Received:  18 October 1997      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/Y1997/V33/I10/1009 1 Westbrook J H Trans Metall Soc AIME.1957:209:898 2 Flinn P A,Trans Metall Soc AIME 1960;218:145 3 Copley S M, Kear B H. Trans Metall Soc AIME,1967 239:977 4 Zhang G P,Wang Z G,Li G Y Acta Metall Mater,1997;45:1705 5 Kuruvilla A K,Stoloff N S.Scr metall ,1987;21:873 6 Matuszyk W,Camus G,Duquete D J,Stoloff N S ,Metall Trans,1990;21A:2967 7 Paris P C,Sih G C .ASTM STP 381,1965;30 8 Peach M D,Kochler J S Phys Rev,1950;80:436 9 Erdogan F,Sih G C .J Basic Eng.1963;85:519 10 Sih G C.Int J Fracture, 1974;10:305 11 Hussain M A、 Pu S L, Underwood J. ASTM STP 560,1974:2 [1] LIU Jinlai, YE Lihua, ZHOU Yizhou, LI Jinguo, SUN Xiaofeng. 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