博士生王邃关于铁基高强度粉末锻造产品热变形行为的研究工作论文被 Powder Metallurgy 杂志录用! - 首页
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Investigation on the hot-deformation behaviour of sintered and forged specimens to improve the forging safety of powder-forged products
S. Wang, Y.K Wu, H.L Wang, F. Jiang*
State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China
*Corresponding author: jiangfeng@mail.xjtu.edu.cn (F. Jiang)
To improve the forging safety of powder-forged products, the hot-deformation behaviour of sintered and forged alloys was investigated and compared in the present study. The results show that the forged specimen was at a higher risk of cracking than the sintered specimen during the forming process. Furthermore, the finite-element simulation also clearly revealed that both fully dense and not fully dense regions co-existed during the forming process. Therefore, using the processing map of the forged specimen to determine the forging parameters would improve the forging safety of powder-forged products. Finally, a spur gear was manufactured as a model product based on the simulated results.
Keywords: Powder forging; Hot-processing map; Constitutive equation; Microstructure; Finite-element method
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