Ti-V-Cr系阻燃钛合金应用研究进展  

Research Progress on Application Technique of Ti-V-Cr Burn Resistant Titanium Alloys

作　　者：曹京霞[1] 黄旭[1] 弭光宝[1] 沙爱学[1] 王宝[1] 

机构地区：[1]北京航空材料研究院先进钛合金航空科技重点实验室,北京100095

出　　处：《航空材料学报》2014年第4期92-97,共6页Journal of Aeronautical Materials

摘　　要：阻燃钛合金是为了应对航空发动机钛火隐患而研制高温结构材料。经过近十年的发展,研发出500℃(Ti40)和550℃(TF550)两个耐温级别的Ti-V-Cr系阻燃钛合金,并且在Ti-V-Cr系阻燃钛合金工业铸锭熔炼、挤压开坯、棒材锻造及环锻件轧制等工艺技术方面取得了较大进展。通过拓展摩擦点火实验技术,建立了以P-co曲线定量表征钛合金抗点燃性能的测试方法,测试结果表明,Ti40与TF550阻燃钛合金具有接近的抗点燃性能。综合考虑原材料成本、综合性能和制造工艺等多方面的因素,Ti40和TF550阻燃钛合金各具优势。Burn-resistant titanium alloy is developed for preventing or minimizing the titanium fire in aero-engine.Burn-resistant titanium alloys with different V containing in Ti-V-Cr alloying system are broadly researched in recent 10 years.They are Ti40 and TF550 with service temperatures of 500℃ and 550℃ respectively.Many results were achieved in the techniques of Ti-V-Cr burn resistant alloys＇ large scale ingot melting,ingot extruding,billet forging and ring rolling.Through the frictional ignition testing,a method based on P-co relationship curve was established to quantitatively describing the fireproof characteristic of titanium alloy.Results show that the fireproof characteristic of Ti40 alloy is similar to TF550 alloy.Ti40 and TF550 have their own advantages by overall considerations of the cost of raw materials,comprehensive mechanical properties and manufacturing progress.

关 键 词：阻燃钛合金 铸锭 挤压 环锻件 力学性能 抗点燃性能 发动机钛火 

分 类 号：TG146.2[一般工业技术—材料科学与工程] V252.2[金属学及工艺—金属材料]