Modeling of flow stress constitutive behavior of GH2984 superalloy for the prospective 700℃ fossil power plant
Due to its excellent creep rupture strength and low cost,superalloy GH2984 has becoming a promising material to be used as heat exchanger in the prospective 700 ℃ fossil power plant.The mechanical response of the material under various forming conditions,which is a particularly important indicator for the superalloy,strongly depends on the forging temperature and strain rate.In current study,based on the measured stress-strain curves under different temperatures and strain rates,a series of flow stress constitutive equations for GH2984 superalloy were established through the classical theories on work hardening and softening.The comparison between the experimental and modeling results has confirmed that the established constitutive equations can correctly describe the mechanical responses and microstructural evolutions of the GH2984 under various hot deformation conditions.
GH2984 superalloy Stress-strain Constitutive Model
Peng Jia Engang Wang Jicheng He
Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education),Northeastern University,Shenyang 110819,China
国际会议
沈阳
英文
427-433
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）