Acta Metall Sin  1998, Vol. 34 Issue (8): 858-863    DOI:

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HIGH TEMPERATURE CREEP OF A DIRECTIONALLY SOLIDIFIED Ni-BASE SUPERALLOY

YUAN Chao; GUO Jianting; YANG Hongcai; WANG Shuhe( Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110015 School of Materials Science and Metallurgy; Northeastern University; Shenyang 110006)Correspondent. Guo Jianting; professor Tel: 25843531-55493; Fax: (024)23891320;E-mail: jtguo .imr.ac.cn

YUAN Chao; GUO Jianting; YANG Hongcai; WANG Shuhe( Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110015 School of Materials Science and Metallurgy; Northeastern University; Shenyang 110006)Correspondent. Guo Jianting; professor Tel: 25843531-55493; Fax: (024)23891320;E-mail: jtguo .imr.ac.cn. HIGH TEMPERATURE CREEP OF A DIRECTIONALLY SOLIDIFIED Ni-BASE SUPERALLOY. Acta Metall Sin, 1998, 34(8): 858-863.

Abstract References Related Articles Recommended Metrics Download:  PDF(1813KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The tensile creep behaviors of DZ17G alloy, a directionally soliditied Ni-base superalloyl were investigated at 870 ℃ under the applied stress range of 330-420 MPa. All　of the creep curves have similar shape: a short primary creep and dominant accelerated creep stages. The creep apparent parameters (the stress exponent and the apparent activation energy for creep) and TEM observations suggest that the Orowan bowing process of dislocations is the dominant creep deformation mechanism. The reason why creep rate ascends at the beginning of accelerated creep stage is not the nucleation and propagation of creep cracks, but the consequence of microstructure change (γ' particles oriented coarsening uncompletely). The creep fracture data follow the Monkman-Grant relationship, and the final fracture process is controlled by the propagation rate of creep cracks. Key words:  directionally solidification      Ni-base superalloy      high temperature tensile creep      creep fracture      Received:  18 August 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/I8/858 1 Sims C T, Stoloff N S, Hagel W C. Superulloys II New York: John Wiley and Sous Inc, 1987: 123 2 Mackay R A, Maiey R D. Metall Trans, 1982; 13A: 1747 3 Nathal M V, Ebert L J. Metall Trans, 1985; 16A: 427 4 Pollock T M, Argon A S. Acta Metall Mater 1992; 40: 1 5 Rouault-Rogez H, Dupeux M, Ignat M. Acta Metall Mater 1994; 42: 3137 6 Dennison J P, Holmes P D, Wilshire B. Mater Sci Eng, 1978; 33: 35 7 Versnyder F L, Shank M E. Mater Sci Eny, 1970; 6: 213 8 Yuan C, Guo J T, Yang H C, Wang S H. J Mater Sci Tech, 1998; 14(3): 219 9 Mishra R S, Singh S P, Sriramawurthy A M, Pandey M C. Mater Sci Tech, 1995; 11: 341 10 Scarlin R B. 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Influence Of High Temperature Heat Treatment On Microstructure And Microhardness Of (Ds)Nial--Cr(Mo)—Hf Eutectic Alloy[J]. 金属学报, 2004, 40(1): 57-61 . [4] YUAN Chao ; GUO Jianting ; WANG Tieli ; YANG Hongcai ; WANG Shuhe ;ZHANG Hao (Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110015)(Materials and Metallurgy School; Northeastern University; Shenyang 110006). THE EFFECT OF APPLIED STRESS ORIENTATION ON THE HIGH TEMPERATURE CREEP BEHAIOUR OF DIRECTIONALLY SOLIDIFIED NICKEL BASE SUPERALLOY[J]. 金属学报, 1998, 34(7): 689-695. [5] LIAO Ebin; GUO Jianting; WANG Shuhe(Institute of Metal Research; The Chinese Academy of Scineces;Shenyang 110015). LCF BEHMIOUR OF DS ALLOY DZ17G AT HIGH TEMPERATURE[J]. 金属学报, 1998, 34(3): 278-282. [6] ZHOU Qing; MA Zongyi; ZHAO Jie; BI Jing; ZHU Shijie; WANG Fugang (Materials Engineering Department; Dalian University of Technology; Dalian 116024)(Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110015). CREEP DEFORMATION AND FRACTURE OF DISPERSOIDS AND SiC PARTICULATES REINFORCED Al BASE COMPOSITES[J]. 金属学报, 1998, 34(1): 107-112. [7] XIAO Jimei (HSIAO Chimei) (University of Science and Technology Beijing; Beiing 100083). MATERIALS DESIGN AGAINST FRACTURE[J]. 金属学报, 1997, 33(2): 113-125. [8] WANG Daifeng; LI Geyang; LI Pengxing; WU Renjie(State Key Laboratory for MMCs; Shanghai Jiaotong University; Shanghai 200030)(Manuscript received 1995-04-14; in revised form 1995-09-14). CREEP FRACTURE PROCESS COUPLED WITH CAVITATION IN SiC_p-Al COMPOSITE[J]. 金属学报, 1996, 32(4): 433-437. [9] YUE Zhufeng;ZHENG Changqing(Northwestern Polytechnical University;Xi'an)(Manuscript received 2 April;1993;in revised form 24 September;1993). MICRO-MECHANICAL ANALYSIS OF THERMAL MISFIT OF SINGLE CRYSTAL Ni-BASE SUPERALLOY[J]. 金属学报, 1994, 30(3): 124-132. [10] ZHANG Jishan;CUI Hua;HU Zhuangqi;MURATA Y;MORINAGA M;YUAA WA N Institute of Metal Research; Academia Sinica; Shenyang Toyohashi University of Technology; Japanassociate professor;Institute of Metal Research;Academia Sinica;Shenyang 110015. APPLICATION OF d-ELECTRON ALLOY DESIGN THEORY TO DEVELOPMENT OF HOT CORROSION RESISTANT Ni-BASE SINGLE CRYSTAL SUPERALLOYS——Ⅰ Characterization of Phase Stability[J]. 金属学报, 1993, 29(7): 5-12. [11] ZHANG Jishan;CUI Hua;HU Zhuangqi;MURATA Y;MORINAGA M;YUKAWA N Institute of Metal Research; Academia Sinica; Shenyang Toyohashi University of Technology; Japanassociate professor;Institute of Metal Research;Academia Sinica;Shenyang 110015. APPLICATION OF d-ELECTRON ALLOY DESIGN THEORY TO DEVELOPMENT OF HOT CORROSION RESISTANT Ni-BASE SINGLE CRYSTAL SUPERALLOYS——Ⅱ. Effects of Refractory Metals Ti, Ta and Nb on Microstructure and Properties[J]. 金属学报, 1993, 29(7): 13-22. [12] AI Suhua;V. LUPINC;M. MALDINI State Key Laboratory for Fracture and Fatigue of Materials; Institute of Metal Research; Academia Sinica; Shenyang; Istituto Perla Tecnologia dei Materiali; Consiglio Nazionale Delle Ricerche; Italy. CREEP FRACTURE IN SINGLE CRYSTALLINE Ni-BASE SUPERALLOYS[J]. 金属学报, 1992, 28(3): 32-37. [13] WANG Huaming;TANG Yajun;ZHANG Jinghua;ZHANG Zhiya;HU Zhuangqi Institute of Metal Research; Academia Sinica; Shenyang. MC CARBIDE FLOATATION DURING DIRECTIONAL SOLIDIFICATION OF A HOT-CORROSION RESISTANT SINGLE CRYSTAL Ni-BASE SUPERALLOY[J]. 金属学报, 1991, 27(4): 71-72. [14] YAO Xuexing;KANG Feiyu;CHEN Nanping Tsinghua University; Beijing. CREEP FRACTURE OF INTERMETALLIC COMPOUND (Fe_(60)Ni_(40)_3 (V_(98)Ti_2)[J]. 金属学报, 1991, 27(4): 67-70. [15] ZHANG Yuanhu;ZHANG Yun;HU Gengxiang Shanghai Jiaotong University. EFFECT OF SULPHURIZING-OXIDIZING ENVIRONMENT ON CREEP CRACK GROWTH OF Ni-BASE SUPERALLOY GH30[J]. 金属学报, 1991, 27(4): 49-53. No Suggested Reading articles found! 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