Microstructures,　textures,　mechanical　properties　and　fracture　behaviors　of　a　newly　developed　near　alpha　titanium　alloy　were　investigated　systematically　at　room　temperature　(RT)　and　high　temperatures　(600　degrees　C　and　650　degrees　C).　Microstructure　observations　revealed　that　alpha　colonies　with　large　size　in　as-casted　alloy　were　either　broken　into　deformed　alpha　lamellas　or　colonies　with　small　size,　or　transformed　into　equiaxed　alpha　grains　by　recrystallization.　The　recrystallized　equiaxed　structure　exhibited　lower　texture　intensities　and　poor　preferential　crystallographic　orientation　comparing　with　macro-zones　corresponding　to　deformed　alpha　colonies.　And　recrystallized　structure　played　an　important　role　in　reducing　texture　intensities　of　overall　alpha　phase.　Due　to　more　recrystallized　equiaxed　alpha　grains,　the　maximum　texture　intensity　of　980E-A　was　slightly　lower　than　that　of　980E-B.　Moreover,　TEM　analyses　proved　that　silicides　promoted　the　recrystallization　of　alpha　grains　by　pinning　dislocations　during　forging.　Comparison　between　current　alloys　with　commonly　used　near　alpha　titanium　alloys　indicated　that　980E-A　exhibited　optimal　combination　of　mechanical　properties　at　RT　and　600　degrees　C.　Observations　of　fracture　surfaces　found　that　silicides　played　an　important　role　in　the　formation　of　voids　and　dimples　due　to　the　production　of　inhomogeneous　plastic　deformation　and　stress　concentration　around　them.　Meanwhile,　silicides　displayed　stress　bearing　effect　during　tensile　process.　By　observations　of　longitudinal　section,　voids　closing　to　fracture　surface　were　mainly　located　in　two　types　of　areas.　First　type　of　areas　was　the　vicinity　of　macro-zones.　Second　type　mainly　distributed　at　the　edges　of　coarse　grain　areas.　Boundaries　of　lamellar　alpha　grains　in　a　single　deformed　alpha　colony　were　also　the　preferential　formation　sites　of　voids　and　micro-cracks.