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This article uses a cubic press , different pressure and temperature , high-pressure sintering of TC4 alloy powder and its TC4 mechanical properties and microstructure of the sintered body before and after hot rolling and heat treatment , research , hot rolling . Using the X-ray diffraction and optical microscopy analysis of the microstructure of the the TC4 sintered body before and after the hot rolling , using the FM-ARS9000 hardness testing system Vickers hardness test Instron 5982 tensile testing machine for tensile mechanical properties test , using a Hitachi S -4800 field emission scanning electron microscopy tensile fracture surface . By means of the above analysis , a systematic study of the pressure and temperature of the the TC4 sintered body density, hardness , organization and performance , as well as the physical properties and microstructure of hot-rolled and heat treatment process of TC4 sintering . The XRD results show that : of TC4 alloy powder XRD pattern of the α-Ti , β-Ti diffraction peaks . The phase composition of the sintered body not changed obviously after the pressure sintering , TC4 . TC4 sintered body relative density higher than 97% , a Vickers hardness of more than 400 HV . After hot rolling , the relative density of the sintered body after the heat treatment process of TC4 has been greatly improved , the relative density of above 99% . TC4 the microstructure of the sintered body mainly equiaxed , tensile strength 300MPa about , the elongation is also low . After hot rolling and heat treatment process , the microstructure did not change much , but its tensile strength has been greatly improved . This experiment TC4 sintered body after heat treatment of the hot rolling , its maximum tensile strength of 1310MPa , the elongation was 2.22%. Fracture analysis shows that the experimental the TC4 sintering body fracture mode to intergranular fracture is a brittle fracture .
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