Present work describes flow and work hardening behavior of Tungsten Heavy Alloy 92W-5.5Ni-2.5Fe (wt%) in heat treated and swaged conditions. The morphology of W-grains in heat treated and swaged materials is equiaxed and elongated in longitudinal direction with same volume fraction, respectively. The swaged material depicts different contiguity values along transverse and longitudinal directions. The strength and elongation values in heat treated condition are smaller and larger than those of the swaged material. The difference in σ_YS and σ_UTS values is very small in swaged material. The true stress-true plastic strain curve of the alloy on log-log scale exhibits two slopes in heat treated condition and follows Ludwigson constitutive equation. This can be attributed to the differences in micro hardness values of W-grains and matrix phase. In contrast, the true stress-true plastic strain curve of the swaged alloy on log-log scale displays only single slope and follows Swift equation due to the presence of pre-strain in the material. Both the materials exhibit three typical stages (I, II and III) of work hardening and linear part of stage III follows KME model. The fracture surface of heat treated material consists of W-cleavage, W-W decohesion and matrix rupture in considerable proportions. In contrast, the swaged material displays the presence of mainly W-cleavage. The fraction of W-matrix failure is significantly small and more or less same in both the materials.

当前的工作描述了在热处理和模锻条件下钨重合金92W-5.5Ni-2.5Fe（wt％）的流动和工作硬化行为。热处理和模锻材料中的W晶粒形态在长度方向上等轴对称并以相同的体积分数伸长。型锻材料沿横向和纵向描绘了不同的邻接值。热处理条件下的强度和伸长率值比型锻材料的强度和伸长率值越来越小。_σYS和_σUTS的差异锻造材料的值很小。合金的真实应力-真实塑性应变曲线在对数对数刻度上显示出在热处理条件下的两个斜率，并遵循Ludwigson本构方程。这可以归因于W晶粒和基体相的显微硬度值的差异。相反，由于材料中存在预应变，型锻合金在对数对数刻度上的真实应力-真实塑性应变曲线仅显示单个斜率，并遵循Swift方程。两种材料均表现出工作硬化的三个典型阶段（I，II和III），阶段III的线性部分遵循KME模型。热处理过的材料的断裂表面由W断裂，WW脱粘和基体断裂组成。相反，型锻材料显示出主要是W裂的存在。