Influences of impact energy on the densification and mechanical properties of powder metallurgical Fe–C–Cu preforms during a powder-forged process

Guo, Bin; Li, Qiang; Wu, Hui; Ao, Jinqing; Tang, Qiyun; Zhang, Yu; Li, Xiao; Lu, Yun

doi:10.1016/j.jmrt.2020.09.084

Cited by 6 publications

(1 citation statement)

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“…The hot deformation behavior of as-sintered alloys has been used to investigate the hot processing map, which could represent the microstructural evolution, the hot formability and optimization of processing parameters [9][10][11][12]. Several works have been applied to reveal the hot deformation behaviors [13,14]. Rathore et al [15] studied the effect of varying Mo content on the mechanical properties of sinter-forged Fe-Cu-C alloys.…”

Section: Introductionmentioning

confidence: 99%

Hot deformation behavior and processing workability of a powder forged Fe-2.1Cu-0.5C alloy

Wang,

Chen,

Yang

et al. 2024

Mater. Res. Express

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Hot deformation behavior of as-sintered Fe-2.1Cu-0.5C alloy was evaluated through the construction of constitutive equations and a hot processing map. The hot deformation behavior was investigated at different temperatures and strain rates and microstructure observations were subsequently conducted. Flow stress for the initiation of dynamic recrystallization mechanism was determined. Tensile and fatigue strength tests were investigated at room temperature. It was observed that the microstructure of the alloy forged at lower temperature exhibited smaller grain size and its grain size increased with higher forging temperatures. Mechanical testing results revealed that an increase in the forging temperature led to a lower tensile strength and a higher fatigue strength. This change can be attributed to the larger grain sizes and the reduction of microcracks. A forging temperature at 1050 ℃ was recommended to achieve optimal mechanical properties for powder forged Fe-2.1Cu-0.5C products. These results might give some hints for optimizing process conditions and improving mechanical properties of powder metallurgy alloys by the use of constitutive equations and thermal processing maps.

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