THERMAL FATIGUE CRACKING IN STEEL 5CrMnMo

Abstract

Abstract: The thermal fatigue behaviour of steel 5CrMnMo after various heat treatments has been examined by means of Coffin-model and self-strained thermal fatigue testing machines.The thermal fatigue crack initiation and propagation have been observed under SEM and TEM. The majority of thermal fatigue cracks of the quenched samples initiated firstly at the grain boundaries and that of the quenched-tempered samples at the breakage interface of the car- bide and matrix.The thermal fatigue cracks of either quenched or quenched-tempered steel propagated mainly along the breakage interface of carbide and grain boundaries.

Key words: thermal fatigue crack, carbide, grain boundary

HE Shiyu LI Ying LIU Jianhong Harbin Institute of Technology,Harbin,China HE Shiyu,Faculty of Metal,Harbin Institute of Technology,Harbin,150006,China. THERMAL FATIGUE CRACKING IN STEEL 5CrMnMo[J]. Acta Metallurgica Sinica (English Letters), 1991, 4(1): 55-58.

[1]	Rendong Liu, Zhiyuan Liang, Li Lin, Mingxin Huang. Dislocation Source and Pile-up in a Twinning-induced Plasticity Steel at High-Cycle Fatigue [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(2): 169-173.
[2]	Yongkui Li, Jianxin Lou, Hongtao Ju, Li Lin. Impact Toughness of Heat-Affected Zones of 11Cr Heat-Resistant Steels [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(6): 821-827.
[3]	Boxiang Wang, Zhenhua Wang, Juntang Yuan, Bin Yu. Effects of (Ti, W)C Addition on the Microstructure and Mechanical Properties of Ultrafine WC-Co Tool Materials Prepared by Spark Plasma Sintering [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(6): 892-902.
[4]	Feng Shi, Ruo-Han Gao, Xian-Jun Guan, Chun-Ming Liu, Xiao-Wu Li. Application of Grain Boundary Engineering to Improve Intergranular Corrosion Resistance in a Fe–Cr–Mn–Mo–N High-Nitrogen and Nickel-Free Austenitic Stainless Steel [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(6): 789-798.
[5]	Wen-Chao Dong, Ming-Yue Wen, Hui-Yong Pang, Shan-Ping Lu. Effect of Post-weld Tempering on the Microstructure and Mechanical Properties in the Simulated HAZs of a High-Strength-High-Toughness Combination Marine Engineering Steel [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(3): 391-402.
[6]	Han Zheng, Liming Fu, Xinbo Ji, Ziyong Li, Yanle Sun, Sixin Zhao, Wei Wang, Aidang Shan. Granular Carbides-Assisted Ultrafine-Ferrite Fabrication in the Pearlitic Steel Without Severe Plastic Deformation and Annealing [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(12): 1645-1656.
[7]	Shuang-Jian Chen, Xiang-Xi Ye, D.K. L.Tsang, Li Jiang, Chao-Wen Li, Kun Yu, Zhi-Jun Li . Microstructure and Its Influence on the Mechanical Properties of Ni-28W-6Cr-Based Alloy-Welded Joints by GTAW [J]. Acta Metallurgica Sinica (English Letters), 2019, 32(8): 1032-1040.
[8]	Xiang-Wei Li, Li Wang, Xin-Gang Liu, Yao Wang, Jia-Sheng Dong, Lang-Hong Lou. Effect of Aging Heat Treatment on the Microstructure and Creep Properties of the Cast Ni-Based Superalloy at Low Temperature [J]. Acta Metallurgica Sinica (English Letters), 2019, 32(5): 651-658.
[9]	Tao Liu, Mei Yang, Jun-Song Wang, Jia-Sheng Dong, Li Wang, Lang-Hong Lou. Effect of Heat Treatment on Microstructure and Stress Rupture Properties of a Ni-Mo-Cr-Fe Base Corrosion-Resistant Superalloy [J]. Acta Metallurgica Sinica (English Letters), 2019, 32(1): 116-126.
[10]	Yong-Jin Wang, Ren-Bo Song, Ren-Feng Song. Phase Transformation and Carbide Precipitation of Functional Gradient Semi-solid 9Cr18 Steel [J]. Acta Metallurgica Sinica (English Letters), 2018, 31(8): 823-830.
[11]	H. Y. Liu, G. Wang, Y. Hong, D. C. Zeng. Effect of Heat Treatment Time on Dy-Cu Alloy Diffusion Process in Dy-Containing Commercial Nd-Fe-B Sintered Magnets [J]. Acta Metallurgica Sinica (English Letters), 2018, 31(5): 496-502.
[12]	Zhi-Nan Wang, Tian Liang, Wei-Wei Xing, Ai-Bing Du1, Ming Gao, Ying-Che Ma, Kui Liu. σ-Phase Precipitation Mechanism of 15Cr-15Ni Titanium-Modified Austenitic Stainless Steel During Long-Term Thermal Exposure [J]. Acta Metallurgica Sinica (English Letters), 2018, 31(3): 281-289.
[13]	Xiao-Lin Pan, Minoru Umemoto. Precipitation Characteristics and Mechanism of Vanadium Carbides in a V-Microalloyed Medium-Carbon Steel [J]. Acta Metallurgica Sinica (English Letters), 2018, 31(11): 1197-1206.
[14]	Wei-Min Gui, Hong-Yu Zhang, Hai-Bo Long, Tao Jin, Xiao-Feng Sun, Qi Zheng. Formation Mechanism of Lamellar M ₂₃C₆ Carbide in a Cobalt-Base Superalloy During Thermal Exposure at 1000 °C [J]. Acta Metallurgica Sinica (English Letters), 2018, 31(1): 27-32.
[15]	Zai-Song Yu,Jian-Xun Zhang,Hong-Zhe Wang,Rong-Can Zhou,Yong Yuan. Mechanism of Stress Relief Cracking in a Granular Bainitic Steel [J]. Acta Metallurgica Sinica (English Letters), 2017, 30(2): 156-163.

THERMAL FATIGUE CRACKING IN STEEL 5CrMnMo

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments