Acta Metall Sin  1997, Vol. 33 Issue (12): 1246-1251    DOI:

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LOW CYCLE FATIGUE BEHAVIOR OF A DZX40M DIRECTIONALLY SOLIDIFIED Co-BASE SUPERALLOY──Ⅱ.Fatigue and Its Mechanism at 700℃

LU Zheng; LIU Lu; XY Yongbo; HU Zhuangqi (Stale Key Laboratory for Fatigue and Fracture of Materials; Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110015)

LU Zheng; LIU Lu; XY Yongbo; HU Zhuangqi (Stale Key Laboratory for Fatigue and Fracture of Materials; Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110015). LOW CYCLE FATIGUE BEHAVIOR OF A DZX40M DIRECTIONALLY SOLIDIFIED Co-BASE SUPERALLOY──Ⅱ.Fatigue and Its Mechanism at 700℃. Acta Metall Sin, 1997, 33(12): 1246-1251.

Abstract References Related Articles Recommended Metrics Download:  PDF(2935KB)  Export:  BibTeX | EndNote (RIS)       Abstract  An investigation has been made on the low cycle fatigue behavior of a DZX40M Co-base directionally solidified superalloy at 700℃ in air under the control of different total strain amplitudes ranging from 3.0 × 10(-3) to 6.0 ×10(-3). The results show that the alloy exhibits a pronounced initial hardening, and secondary hardening after a short saturation. Examination by TEM reveals that the initial hardening is arising from the pile-up of the stacking faults at the intersection of stacking faults, while the stress saturation is due to the obstacle to the motion of the stacking faults at the intersection becomes weaker, arising from the thermal activation, and the stress concentration of the pile-up of the stacking faults at the intersection. The secondary hardening is contributed to the formation of the dislocation tangle. Key words:  Co-base superalloy      fatigue      stacking fault      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/I12/1246 1Howie A, Whelan M J. Proc R Soc London, 1962; A267: 206 2Gevers R,Art A,Amelincks S.Phys Status Solidi,1963;3:1563 3 Ashbee K H G.Acta Metall.1967;15:1129 4 Rajan K,Sandz J V.J Mater Sci,1982;17:769~ [1] WANG Lei, LIU Mengya, LIU Yang, SONG Xiu, MENG Fanqiang. Research Progress on Surface Impact Strengthening Mechanisms and Application of Nickel-Based Superalloys[J]. 金属学报, 2023, 59(9): 1173-1189. [2] ZHAO Peng, XIE Guang, DUAN Huichao, ZHANG Jian, DU Kui. Recrystallization During Thermo-Mechanical Fatigue of Two High-Generation Ni-Based Single Crystal Superalloys[J]. 金属学报, 2023, 59(9): 1221-1229. [3] JIANG He, NAI Qiliang, XU Chao, ZHAO Xiao, YAO Zhihao, DONG Jianxin. Sensitive Temperature and Reason of Rapid Fatigue Crack Propagation in Nickel-Based Superalloy[J]. 金属学报, 2023, 59(9): 1190-1200. [4] LI Jiarong, DONG Jianmin, HAN Mei, LIU Shizhong. Effects of Sand Blasting on Surface Integrity and High Cycle Fatigue Properties of DD6 Single Crystal Superalloy[J]. 金属学报, 2023, 59(9): 1201-1208. [5] ZHANG Lu, YU Zhiwei, ZHANG Leicheng, JIANG Rong, SONG Yingdong. Thermo-Mechanical Fatigue Cycle Damage Mechanism and Numerical Simulation of GH4169 Superalloy[J]. 金属学报, 2023, 59(7): 871-883. [6] ZHANG Bin, TIAN Da, SONG Zhuman, ZHANG Guangping. Research Progress in Dwell Fatigue Service Reliability of Titanium Alloys for Pressure Shell of Deep-Sea Submersible[J]. 金属学报, 2023, 59(6): 713-726. [7] ZHANG Zhefeng, LI Keqiang, CAI Tuo, LI Peng, ZHANG Zhenjun, LIU Rui, YANG Jinbo, ZHANG Peng. Effects of Stacking Fault Energy on the Deformation Mechanisms and Mechanical Properties of Face-Centered Cubic Metals[J]. 金属学报, 2023, 59(4): 467-477. [8] QI Zhao, WANG Bin, ZHANG Peng, LIU Rui, ZHANG Zhenjun, ZHANG Zhefeng. Effects of Stress Ratio on the Fatigue Crack Growth Rate Under Steady State of Selective Laser Melted TC4 Alloy with Defects[J]. 金属学报, 2023, 59(10): 1411-1418. [9] HAN Dong, ZHANG Yanjie, LI Xiaowu. Effect of Short-Range Ordering on the Tension-Tension Fatigue Deformation Behavior and Damage Mechanisms of Cu-Mn Alloys with High Stacking Fault Energies[J]. 金属学报, 2022, 58(9): 1208-1220. [10] SONG Wenshuo, SONG Zhuman, LUO Xuemei, ZHANG Guangping, ZHANG Bin. Fatigue Life Prediction of High Strength Aluminum Alloy Conductor Wires with Rough Surface[J]. 金属学报, 2022, 58(8): 1035-1043. [11] ZHOU Hongwei, GAO Jianbing, SHEN Jiaming, ZHAO Wei, BAI Fengmei, HE Yizhu. Twin Boundary Evolution Under Low-Cycle Fatigue of C-HRA-5 Austenitic Heat-Resistant Steel at High Temperature[J]. 金属学报, 2022, 58(8): 1013-1023. [12] TIAN Ni, SHI Xu, LIU Wei, LIU Chuncheng, ZHAO Gang, ZUO Liang. Effect of Pre-Tension on the Fatigue Fracture of Under-Aged 7N01 Aluminum Alloy Plate[J]. 金属学报, 2022, 58(6): 760-770. [13] YANG Qinzheng, YANG Xiaoguang, HUANG Weiqing, SHI Duoqi. Propagation Behaviors of Small Cracks in Powder Metallurgy Nickel-Based Superalloy FGH4096[J]. 金属学报, 2022, 58(5): 683-694. [14] LI Xifeng, LI Tianle, AN Dayong, WU Huiping, CHEN Jieshi, CHEN Jun. Research Progress of Titanium Alloys and Their Diffusion Bonding Fatigue Characteristics[J]. 金属学报, 2022, 58(4): 473-485. [15] SU Kaixin, ZHANG Jiwang, ZHANG Yanbin, YAN Tao, LI Hang, JI Dongdong. High-Cycle Fatigue Properties and Residual Stress Relaxation Mechanism of Micro-Arc Oxidation 6082-T6 Aluminum Alloy[J]. 金属学报, 2022, 58(3): 334-344. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed