EFFECT OF Mg AND Zr ADDITION ON CREEP CRACK GROWTH BEHAVIOUR OF A Ni-BASE SUPERALLOY

Abstract

Abstract: The creep crack growth(CCG)and the time to carck initiation and rupture of specimen (t_(rc)and t_r)were measured by means of electrical potential method on single edge notched specimens at 700℃.The field near the crack tip under steady-state creep was represented by energy rate integral(C~*),and the CCG rate as a function of C~* has been obtained.The agreement between the predicted and observed t_(rc)values is quite good.It was found that the addition of small amount of Mg and Zr in the alloys causes t_(rc)and t_r of the specimens to in- crease significantly.

Key words: Ni-base alloy, Mg, Zr, creep crack growth rate, single edge notched, specimen

GUO Encai XU Fengqin Central Iron and Steel Research Institute,Ministry of Metallurgical Industry,Beijing,China GUO Encai,Dept.No.5,Central Iron and Steel Research Institute,Ministry of Metallurgical Industry,Beijing,China. EFFECT OF Mg AND Zr ADDITION ON CREEP CRACK GROWTH BEHAVIOUR OF A Ni-BASE SUPERALLOY[J]. Acta Metallurgica Sinica (English Letters), 1989, 2(2): 147-152.

[1]	Wei-Peng Chen, Jia-Qi Pei, Hua Hou, Yu-Hong Zhao. Phase-field simulation of α-Mg dendrite growth in magnesium alloys: A review [J]. Metals Advances, 2026, 40(2): 48-61.
[2]	Huimin Yang, Kun Yang, Guobing Wei, Rongguang Li. Optimization of Surface Layer Properties of Mg-9Li-1Zn Alloy by Ultrasonic Surface Rolling Process and its Impact on Corrosion Behavior [J]. Acta Metallurgica Sinica (English Letters), 2025, 38(8): 1421-1435.
[3]	Haoran Pang, Liwei Lu, Gongji Yang, Xiaojun Wang, Wen Wang, Hua Zhang, Yujuan Wu. Amelioration of Mechanical Properties of Rolled Mg-4.5Al-2.5Zn Alloy by Cryogenic Cycling Treatment [J]. Acta Metallurgica Sinica (English Letters), 2025, 38(8): 1436-1452.
[4]	Qi Zhou, Yufeng Xia, Yu Duan, Baihao Zhang, Yuqiu Ye, Peitao Guo, Lu Li. Microstructure and Mechanical Properties of Yb-Containing AZ80 Cast Alloys [J]. Acta Metallurgica Sinica (English Letters), 2025, 38(7): 1095-1108.
[5]	Yuanxiao Dai, Yue Zhang, Mei Wang, Jie Liu, Yaobo Hu, Bin Jiang. Three-Point Bending Deformation Behavior of a High Plasticity Mg-2.6Er-0.6Zr Alloy Sheet [J]. Acta Metallurgica Sinica (English Letters), 2025, 38(7): 1109-1126.
[6]	Ran Ni, Shen Hua, Huashen Liu, Saijun Huang, Ying Zeng, Yanqin Chai, Hao Zhou, Jiang Zheng, Dongdi Yin. Statistical Study of Activity and Hall-Petch Coefficients for Individual Slip Modes in Basal-Textured Pure Mg [J]. Acta Metallurgica Sinica (English Letters), 2025, 38(7): 1145-1156.
[7]	Yunhu Ding, Yingpeng Li, Hongfang Liu, Wenhao Wang, Yijun Wei, Haitao Duan, Wen Zhan. Corrosion Evolution Behavior of Ti/Zr/Oligomeric Epoxy Silane Composite Chemical Conversion Coatings on Multi-metals [J]. Acta Metallurgica Sinica (English Letters), 2025, 38(6): 889-903.
[8]	Chenzhi Xing, Ming-Hsien Lee, Gongwang Cao, Yuwei Liu, Quanzhong Guo, Zhenyao Wang, Chuan Wang. Discoloration Process of Minted Copper-Nickel Alloys in Chloride Ion-Containing Environments: Experimental and DFT Research [J]. Acta Metallurgica Sinica (English Letters), 2025, 38(6): 925-945.
[9]	Hongyang Zhang, Huihui Nie, Zhijian Li, Hongsheng Chen, Wei Liang, Liuwei Zheng. Evolution of Microstructure and Mechanical Properties of AZ31 Sheets with Different Initial Microstructures During the Corrugated Wide Limit Alignment Process [J]. Acta Metallurgica Sinica (English Letters), 2025, 38(6): 1012-1028.
[10]	Xinghui Wang, Yu Yan, Wen Zhang, Huijun Kang, Enyu Guo, Zongning Chen, Rongchun Chen, Tongmin Wang. Enhanced Thermoelectric and Mechanical Properties of ZrNiSn Half-Heusler Compounds by Excess Ag Doping at Ni Sites [J]. Acta Metallurgica Sinica (English Letters), 2025, 38(5): 763-771.
[11]	Hong Chen, Ruitao Qu, Haotian Ma, Kexing Song, Feng Liu. Simultaneously Enhanced Strength and Fracture Resistance in HfNbTaTiZr Refractory High-Entropy Alloy at Higher Strain Rate [J]. Acta Metallurgica Sinica (English Letters), 2025, 38(4): 529-541.
[12]	Jing Wang, Xuejian Wang, Zongning Chen, Huijun Kang, Tongmin Wang, Enyu Guo. In Vitro Corrosion Behavior and Mechanical Property of Novel Mg-Sn-In-Ga Alloys for Orthopedic Applications [J]. Acta Metallurgica Sinica (English Letters), 2025, 38(3): 353-366.
[13]	Jian Dong, Jufu Jiang, Ying Wang, Minjie Huang, Jingbo Cui, Tao Song. Effect of Solution and Aging Treatment on Microstructure and Mechanical Properties of Al-14Si-5Cu-1.1Mg-2.3Ni-0.3La Alloy [J]. Acta Metallurgica Sinica (English Letters), 2025, 38(3): 449-464.
[14]	Huajian Wu, Jieli Ma, Yong Jiang, Yiren Wang, Fuhua Cao. Roles of Y₂Zr₂O₇ Nano-Oxides in Helium Management in ODS Ferritic Alloys: A First-Principles Study [J]. Acta Metallurgica Sinica (English Letters), 2025, 38(3): 497-506.
[15]	Zhiqing Chen, Zhixian Zhao, Yiqiang Hao, Xiaoling Chen, Liping Zhou, Jingya Wang, Tao Ying, Bin Chen, Xiaoqin Zeng. Development of Interpenetrating Phase Structure AZ91/Al₂O₃ Composites with High Stiffness, Superior Strength and Low Thermal Expansion Coefficient [J]. Acta Metallurgica Sinica (English Letters), 2025, 38(2): 245-258.

EFFECT OF Mg AND Zr ADDITION ON CREEP CRACK GROWTH BEHAVIOUR OF A Ni-BASE SUPERALLOY

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments