Effects of Cold Rotary Forging on Microstructure and Mechanical Properties of Nb521 Alloy Bars AITranslate
Abstract AITranslate
The effects of cold rotary forging on the microstructure and tensile mechanical properties of Nb521 alloy bars for high temperature fasteners were investigated using metallographic microscope,electron backscatter diffractometer and tensile mechanical property test.The results show that with the increase of processing rate of cold rotary forging,the grains of the bar are elongated in the axial direction to form fibrous microstructure,the tensile mechanical properties show an obvious tendency of work hardening,and the strength gradually increases.When the bars with different processing rates are annealed in vacuum at 1 350℃for 1 h,all the microstructures are incompletely recrystallized.The recrystallization ratio of the bar with 60% processing rate is medium,but its average grain size is the smallest and its comprehensive mechanical properties are the best.The grain sizes of the core and the edge of the bar with 60% processing rate are quite different,and the strength of the core is higher than that of the edge in the hard state,but lower than that of the edge in the annealed state.
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Basic Information:
DOI：
Chinese Library Classification Number:TG146.416[金属学及工艺—金属材料]
Citation Information:
The effects of cold rotary forging on the microstructure and tensile mechanical properties of Nb521 alloy bars for high temperature fasteners were investigated using metallographic microscope,electron backscatter diffractometer and tensile mechanical property test.The results show that with the increase of processing rate of cold rotary forging,the grains of the bar are elongated in the axial direction to form fibrous microstructure,the tensile mechanical properties show an obvious tendency of work hardening,and the strength gradually increases.When the bars with different processing rates are annealed in vacuum at 1 350℃for 1 h,all the microstructures are incompletely recrystallized.The recrystallization ratio of the bar with 60% processing rate is medium,but its average grain size is the smallest and its comprehensive mechanical properties are the best.The grain sizes of the core and the edge of the bar with 60% processing rate are quite different,and the strength of the core is higher than that of the edge in the hard state,but lower than that of the edge in the annealed state.
quote
| GB/T 7714-2015 | [1] XIN Meng-ming, LV Yi-ge, LI Shou-ping, et al. Effects of Cold Rotary Forging on Microstructure and Mechanical Properties of Nb521 Alloy Bars[J]. Rare Metals and Cemented Carbides, 2018(4): 37-42. |
| MLA | [1] XIN Meng-ming, et al., "Effects of Cold Rotary Forging on Microstructure and Mechanical Properties of Nb521 Alloy Bars." Rare Metals and Cemented Carbides, no. 4, 2018, pp. 37-42. |
| APA | [1] XIN Meng-ming, LV Yi-ge, LI Shou-ping, ZHANG Xiao, WANG Hui, HAN Wei-songa, HU Xiao-chen, & Shen Li-hua. (2018). Effects of Cold Rotary Forging on Microstructure and Mechanical Properties of Nb521 Alloy Bars. Rare Metals and Cemented Carbides(4), 37-42. |
| IEEE | [1] XIN Meng-ming, LV Yi-ge, LI Shou-ping, ZHANG Xiao, WANG Hui, HAN Wei-songa, HU Xiao-chen, and Shen Li-hua, "Effects of Cold Rotary Forging on Microstructure and Mechanical Properties of Nb521 Alloy Bars," Rare Metals and Cemented Carbides, no. 4, pp. 37-42, 2018. keywords: {Nb521 alloy;cold rotary forging;processing rate;microstructure;tensile mechanical property} |