B-free　and　B-containing　near　a　titanium　alloys　were　fabricated　by　induction　skull　melting　method.　Microstructures,　textures,　mechanical　properties　and　fracture　behaviors　were　investigated.　Observations　of　as-casted　microstructures　revealed　that　prior　beta　grains　and　alpha　colonies　were　obviously　refined　after　adding　trace　boron　element,　and　widmannstatten　structure　of　B-free　alloy　transformed　to　basket-weave　structure　of　B-containing　alloy.　For　as-forged　alloys,　prior　beta　grains　were　broken　and　squashed,　and　they　stretched　along　direction　perpendicular　to　forging　direction.　TiB　whiskers　promoted　dynamic　recrystallization　behavior,　which　led　to　the　precipitation　of　more　equiaxed　alpha　grains　around　them.　Texture　intensity　of　overall　alpha　phase　obviously　decreased　after　the　addition　of　trace　boron　element,　which　manifested　that　TiB　whiskers　prohibited　texture　formation　and　improved　microstructure　homogeneity.　B-containing　alloy　exhibited　excellent　combination　of　room　temperature　(RT)　and　high　temperature　(650　degrees　C)　mechanical　properties.　Fracture　characteristics　of　B-free　and　B-containing　alloys　were　dominant　by　abundant　dimples　and　cleavage　fracture　of　alpha　lamellas　during　RT　tensile　processes.　At　650　degrees　C,　the　cleavage　fracture　of　alpha　lamellas　was　replaced　by　dimples,　illustrating　ductile　fracture　characteristics.　Longitudinal　and　transverse　fracture　of　TiB　whiskers　existed　no　matter　at　RT　or　at　650　degrees　C　for　B-containing　alloy.　By　observations　of　lateral　surfaces,　cracks　and　voids　were　easier　to　generate　at　boundaries　between　grains　and　colonies　with　large　size　for　B-free　alloy.　For　B-containing　alloy,　comparing　with　macro-zones　in　matrix,　voids　were　inclined　to　generate　around　interfaces　of　TiB　whiskers　and　matrix　due　to　strain　mismatch.　It　illustrated　TiB　whiskers　accelerated　the　fracture　of　alloy.　Voids,　transverse　fracture　of　TiB　whiskers　and　lateral　abhesion　of　TiB　whiskers　were　detected　at　RT,　while　lateral　abhesion　of　TiB　whiskers　was　seldom　discovered　during　650　degrees　C　tensile　process.