300M钢在门坎值附近疲劳裂纹扩展行为的研究

Abstract

Abstract:

In this paper fatigue crack propagation behaviour of 300M ultra-high strength steel has been investigated in laboratorial air over a very wide range of growth rates from 10-7 to 10-3 mm/cycle at the various load ratios R( = 0.05, 0.1, 0.3, 0.5, 0.7) and the two states of heat treatment (quench and isothermal). Particula emphasis has been devoted to the influence of load ratio and microstructure on behaviour of near-threshold fatigue crack growth. According to oxide deposits and intergranular fracture observed on near-threshold fatigue fractures behaviour of near-threshold crack growth in 300M has been explained rationally in terms of the crack closure and environmental effect.

Key words: threshold value, fatigue crack growth rate, load ratio, microstructure

Ding Chuan-fu. INVESTIGATION OF NEAR-THRESHOLD FATIGUE CRACK PROPAGATION BEHAVIOUR IN 300M ULTRA-HIGH STRENGTH STEEL[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 1992, 13(8): 456-460.

[1]	Zheming FAN, Weizhu YANG, Yan ZENG, Zhenan ZHAO, Lei LI. Anisotropic tensile properties of GH4169 alloy repaired by laser direct energy deposition [J]. Acta Aeronautica et Astronautica Sinica, 2024, 45(8): 429129-429129.
[2]	Junfei TENG, Jiahao LI, Huiyan ZHOU, Dawei WU, Haitao XU, Tiesong LIN, Yongde HUANG. Effect of TLP diffusion welding process parameters on microstructure and mechanical properties of GH5188 superalloy joint [J]. Acta Aeronautica et Astronautica Sinica, 2024, 45(8): 429205-429205.
[3]	Fengqi WANG, Zhongqi YU, Yehui MENG, Tian GAN, Yixi ZHAO. Deformation mechanism and recrystallization microstructure evolution of aluminum stiffened cylinder during hot flow spinning based on numerical simulation [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2023, 44(9): 627341-627341.
[4]	Nan ZHAO, Duosheng LI, Yin YE, Fencheng LIU, Wugui JIANG. Microstructure and properties of GH5188 alloy fabricated by selective laser melting [J]. Acta Aeronautica et Astronautica Sinica, 2023, 44(19): 428332-428332.
[5]	Yanting LIU, Jihui OU, Yufeng HAN, Jie CHEN. Effects of rectangular micro-scale structures on hypersonic rarefied shear flow [J]. Acta Aeronautica et Astronautica Sinica, 2023, 44(16): 127956-127956.
[6]	Jiahong NIU, Haonan JIA, Fajun YI, Zujun PENG, Wei CHEN. Low-pressure thermal stability and high-temperature electrical conductivity of dense amorphous SiCN [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(S2): 152-159.
[7]	YANG Jiankai, GU Dongdong, GE Qing, TAN Chenchen, WEN Yu. Support layout and precise forming mechanism of aluminum alloy for laser additive manufacturing [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(4): 525331-525331.
[8]	ZHANG Quanli, CHU Chenglong, ZHAI Jianchao, WANG Yukai, ZHANG Zhen, XU Jiuhua. Surface characteristics formation mechanism of ablated monocrystalline silicon by UV nanosecond pulsed laser [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(4): 525341-525341.
[9]	HU Xianliang, QIAO Hongchao, ZHAO Jibin, LU Ying, WU Jiajun, YANG Yuqi. Effect of laser shock wave on thermal corrosion resistance of single crystal alloy [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(4): 525591-525591.
[10]	ZHAO Kehan, LIU Duo, ZHU Haitao, CHEN Bin, HU Shengpeng, SONG Xiaoguo. Effect of brazing temperature on microstructure and mechanical property of C/C/AgCuTi+C_f/TC4 joint [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(4): 525007-525007.
[11]	WANG Miao, WANG Wei, YANG Yunlong, TAN Caiwang, WANG Gang. Effect of brazing time on microstructure and properties of SiC ceramic brazed with CoFeNiCrCu [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(4): 525057-525057.
[12]	LI Xiaopeng, HAN Rui, QIAN Xusheng, ZHANG Binggang, WANG Kehong. Effect of adding boron element on microstructure and shear strength of Ni-25at%Si/Ti600 joint [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(2): 625069-625069.
[13]	LI Hongliang, CUI Zhanxiang, LIU Shixiong, MA Qiang, YAO Yiqiang, LEI Yucheng. Acoustic-electric characteristics and process of ultrasonic-arc MIG welding of 6061 aluminum alloy [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(2): 624969-624969.
[14]	CAI Xiaoqiang, WANG Dongpo, WANG Ying, YANG Zhenwen. Interfacial microstructure and mechanical properties of TiB₂-TiC-SiC ceramics joints fabricated by contact reactive brazing technique [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(2): 625006-625006.
[15]	LU Chuanyang, CHEN Gangqiang, TANG Xiatao, HE Yanming, YANG Jianguo, ZHENG Wenjian, MA Yinghe, LI Huaxin, GAO Zengliang. Microstructure and mechanical properties of Hastelloy N superalloy joints brazed using BNi71CrSi filler alloy [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(2): 625040-625040.

INVESTIGATION OF NEAR-THRESHOLD FATIGUE CRACK PROPAGATION BEHAVIOUR IN 300M ULTRA-HIGH STRENGTH STEEL

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments