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1、钛合金的密度小,比强度、比刚度高,抗腐蚀性能、高温力学性能、抗疲劳和蠕变性能都很好,具有优良的综合性能,是一种新型的、很有发展潜力和应用前景的结构材料。近年来,世界钛工业和钛材加工技术得到了飞速发展,海绵钛、变形钛合金和钛合金加工材的生产和消费都达到了很高的水平,在航空航天领域、舰艇及兵器等军品制造中的应用日益广泛,在汽车、化学和能源等行业也有着巨大的应用潜力。Titaniumalloydensity,specificstrength,highspecificstiffness,corrosion
2、resistance,hightemperaturemechanicalproperties,fatigueandcreeppropertiesareverygood,withexcellentcomprehensiveperformance,isanew,greatdevelopmentpotentialandapplicationprospectofstructuralmaterials・Inrecentyears,thetitaniumindustryintheworldandtitaniu
3、mprocessingtechnologyhasmaderapiddevelopment,spongetitanium,deformationoftitaniumalloyandtitaniumalloyproductionandconsumptionhavereachedaveryhighlevel,theapplicationinthefieldofaerospace,shipsandweaponsandothermi1itarymanufacturingismoreandmorewidely
4、,inthecar,chemicalandenergyetc・industryalsohasenormouspotentialapplications.一、钛及钛合金的特性Characteristicone,titaniumandtitaniumaHoy钛及钛合金具有许多优良特性,主要体现在如下几个方面:Manyexcellentpropertiesoftitaniumandtitaniumalloywith,mainlymanifestsinthefollowingseveralaspects:
5、1.强度高。钛合金具有很高的强度,其抗拉强度为686-1176MPa,而密度仅为钢的60%左右,所以比强度很高。1highstrength.Titaniumalloywithveryhighstrength,itstensilestrengthis6861176MPa,andthedensityisonlyabout60%ofsteel,sotheratioofhighstrength・2•硬度较高。钛合金(退火态)的硬度HRC为32-38。2thehigherhardness・Titaniuma
6、lloy(annealed)hardnessofHRC32-3&3.弹性模量低。钛合金(退火态)的弹性模量为1.078x10-1.176xlOMPa,约为钢和不锈钢的一半。3lowelasticmodulus.Titaniumalloy(annealed)elasticmodulusis1.078x10to1.176xlOMPa,abouthalfofsteelandstainlesssteel・4•高温和低温性能优良。在高温下,钛合金仍能保持良好的机械性能,其耐热性远energyetc・indu
7、stryalsohasenormouspotentialapplications.一、钛及钛合金的特性Characteristicone,titaniumandtitaniumaHoy钛及钛合金具有许多优良特性,主要体现在如下几个方面:Manyexcellentpropertiesoftitaniumandtitaniumalloywith,mainlymanifestsinthefollowingseveralaspects:1.强度高。钛合金具有很高的强度,其抗拉强度为686-1176MPa,
8、而密度仅为钢的60%左右,所以比强度很高。1highstrength.Titaniumalloywithveryhighstrength,itstensilestrengthis6861176MPa,andthedensityisonlyabout60%ofsteel,sotheratioofhighstrength・2•硬度较高。钛合金(退火态)的硬度HRC为32-38。2thehigherhardness・Titaniumalloy(annealed)hardnessofHRC