Mechanical alloying and direct powder forging of Ni–20Cr–20Fe-0.08C alloy

Gaikwad, S.D.; Dabhade, Vikram V.; Murty, S.V.S Narayana; Manwatkar, Sushant

doi:10.1016/j.matchemphys.2024.129039

Cited by 4 publications

(1 citation statement)

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“…Powder-forging (PF) is a near net shape processing method that forges the as-sintered product into its final shape with high precision and excellent mechanical properties. This method provides an optimized combination of powder metallurgy (PM) and precise forging [1]. Compared with wrought steel products, PF products could be both lighter and stronger by optimizing the preform shape and processing parameters [2][3][4].…”

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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