Acta Metall Sin  1992, Vol. 28 Issue (3): 32-37    DOI:

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CREEP FRACTURE IN SINGLE CRYSTALLINE Ni-BASE SUPERALLOYS

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

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. Acta Metall Sin, 1992, 28(3): 32-37.

Abstract References Related Articles Recommended Metrics Download:  PDF(1469KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Creep fracture behaviour of <001> oriented single crystalline Ni--basesuperalloys CMSX--2, SRR99 and RR2000 has been investigated in the temperaturerange of 750--1000℃ and under stress with in the scope of 150--680 MPa. The creepfracture surfaces and logitudinal sections of crept specimens have been examined bySEM. Creep cracks seem always to initiate at inherent casting pores and slowly propa-gate anisotropically along the (001) planes, perpendecular to axis of stress applied, upto the final fast fracture. Creep cracks can also nucleate at fractured carbides or at in-terfaces between carbides and matrix in the alloys containing more carbon. Although athigher testing temperatures, oxidation masked strongly the fracture surface, the creepdamage mechanism did not seem to vary in the temperature and stress range explored.The size distribution and the area fraction of (001) facets on fracture surface character-ize the creep crack damage level reached just before the collapse. Key words:  single crystal Ni-base superalloy      micropore      crack initiation      creep fracture      Received:  18 March 1992      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/Y1992/V28/I3/32 1 Fritzemeier L G. In: Duhl D N, Maurer G, Antolovich S, Lund C, Reichman S eds., Superalloys 1988, Proc Conf, Champion Pennsylvania USA, 18--22, September, 1988, TMS--AIME, 1988: 265 2 Mackay R A, Ebert L J. Scr Metall, 1983; 17: 1217 3 Nathal M V, Ebert L J. Metall Trans, 1985; 16A: 427 4 Caron P, Khan T, Nakagawa Y G. Scr Metall, 1986; 20: 499 5 Anton D L. Acta Metall, 1984; 32: 1669 6 Matera R. Scr Metall, 1989; 23: 65 [1] CHANG Litao. Corrosion and Stress Corrosion Crack Initiation in the Machined Surfaces of Austenitic Stainless Steels in Pressurized Water Reactor Primary Water： Research Progress and Perspective[J]. 金属学报, 2023, 59(2): 191-204. [2] HE Siliang, ZHAO Yunsong, LU Fan, ZHANG Jian, LI Longfei, FENG Qiang. Effects of Hot Isostatic Pressure on Microdefects and Stress Rupture Life of Second-Generation Nickel-Based Single Crystal Superalloy in As-Cast and As-Solid-Solution States[J]. 金属学报, 2020, 56(9): 1195-1205. [3] Li WANG,Zhongjiao ZHOU,Shaohua ZHANG,Xiangdong JIANG,Langhong LOU,Jian ZHANG. CRACK INITIATION AND PROPAGATION AROUND HOLES OF Ni-BASED SINGLE CRYSTAL SUPERALLOY DURING THERMAL FATIGUE CYCLE[J]. 金属学报, 2015, 51(10): 1273-1278. [4] YU Long, SONG Xiping, ZHANG Min, LI Hongliang, JIAO Zehui, YU Huichen. CRACK INITIATION AND PROPAGATION OF HIGH Nb-CONTAINING TiAl ALLOY IN FATIGUE-CREEP INTERACTION[J]. 金属学报, 2014, 50(10): 1253-1259. [5] . FORMATION OF SOLIDIFICATION AND HOMOGENISATION MICROPORES IN TWO SINGLE CRYSTAL SUPERALLOYS PRODUCED BY HRS AND LMC PROCESSES[J]. 金属学报, 2012, 48(10): 1237-1247. [6] WANG Zhiying WANG Jianqiu HAN En–hou KE Wei YAN Maocheng ZHANG Junwei LIU Chuwei . STRESS CORROSION CRACK INITIATION BEHAVIOR FOR THE X70 PIPELINE STEEL BENEATH A DISBONDED COATING[J]. 金属学报, 2012, 48(10): 1267-1272. [7] XIE Jijia HONG Youshi. EXPERIMENTAL INVESTIGATION ON FATIGUE BEHAVIOR OF NANOCRYSTALLINE NICKEL[J]. 金属学报, 2009, 45(7): 844-848. [8] ZHANG Yongjian HUI Weijun XIANG Jinzhong DONG Han WENG Yuqing . EFFECT OF GRAIN SIZE ON ULTRA--HIGH--CYCLE FATIGUE PROPERTIES OF 42CrMoVNb STEEL[J]. 金属学报, 2009, 45(7): 880-886. [9] CHEN Zhubing HUANG Zhiwei WANG Zhongguang. THERMO--MECHANICAL FATIGUE BEHAVIOR OF Ni--BASED SUPERALLOY COATED WITH Ni--Cr--Al--Y[J]. 金属学报, 2009, 45(7): 820-825. [10] HONG Youshi ZHAO Aiguo QIAN Gui'an. ESSENTIAL CHARACTERISTICS AND INFLUENTIAL FACTORS FOR VERY--HIGH--CYCLE FATIGUE BEHAVIOR OF METALLIC MATERIALS[J]. 金属学报, 2009, 45(7): 769-780. [11] QIAN Gui'an HONG Youshi. EFFECTS OF ENVIRONMENTAL MEDIA ON HIGH CYCLE AND VERY-HIGH-CYCLE FATIGUE BEHAVIORS OF STRUCTURAL STEEL 40Cr[J]. 金属学报, 2009, 45(11): 1356-1363. [12] . [J]. 金属学报, 2007, 43(10): 1025-1030 . [13] . IN SITU STUDY OF MARTENSITE TRANSFORMATION , PLASTIC DEFORMATION AND CRACK NUCLEATION FOR NI2MNGA FERROMAGNETIC SHAPE MEMORY ALLOY[J]. 金属学报, 2006, 42(8): 810-814 . [14] WANG Xishu; LIANG Feng; ZENG Yanping; XIE Xishan. SEM IN SITU OBSERVATIONS TO THE EFFECTS OF INCLUSIONS ON INITIATION AND PROPAGATION OF THE LOW CYCLIC FATIGUE CRACK IN SUPER STRENGTH STEEL[J]. 金属学报, 2005, 41(12): 1272-1276 . [15] HOU Jieshan; ZHANG Yulong; GUO Jianting; JI Guang; ZHOU Lanzhang; YE Hengqiang. High Temperature Creep Behavior Of Cast Ni Base Superalloy K44[J]. 金属学报, 2004, 40(6): 579-. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed