(1. 西北工業(yè)大學(xué)材料科學(xué)及工程系， 西安710072; 2. 國(guó)營(yíng)安大鍛造廠， 貴州安順561005；
3. 北京航空材料研究院， 北京100095)
摘 要: 通過(guò)將兩相鈦合金毛坯組織改變?yōu)獒槧?EM>α′相過(guò)飽和馬氏體， 根據(jù)盤形零件各部位在工作環(huán)境下對(duì)組織形態(tài)的要求各不相同，設(shè)計(jì)了能控制應(yīng)變量的毛坯形狀和規(guī)格， 制造出輪緣具有網(wǎng)籃狀組織或魏氏組織， 而輪輻、 輪轂具有等軸細(xì)晶組織的雙重組織—雙重性能的壓氣機(jī)盤， 以滿足工作溫度梯度、應(yīng)力梯度較大的航空發(fā)動(dòng)機(jī)內(nèi)壓縮機(jī)用盤形件的要求。
關(guān)鍵字: TC11鈦合金； 雙性能盤； 成形機(jī)理
（1. Department of Materials Science and Engineering, Northwestern Polytechnical University, Xi′an 710072, P.R.China;
2. Anda Forging Plant, Anshun, Guizhou 561005, P.R.China;
3. Beijing Institute of Aeronautical Materials, Beijing 100095, P.R.China）
Abstract:The mechanism of forging a dualproperty compressor disc using twophase titanium alloy was studied. In order to fabricate the dualproperty compressor disc, the microstructure of billet must be changed to martensite through forging in α+β two phase region and heating in β phase region, followed by water cooling. According to the requirement of microstructure on different locations of the disc due to great temperature and stress gradients under given conditions, the deformation extent and the size of billet were designed. TC11 Tialloy dual property compressor disc of d 420 mm and d510 mm were forged by isothermal , or conventional die forging method. The disc core is of equiaxed microstructure with high strength, ductility and lowcycle fatigue life and the rim is of net microstructure with high resistance to high temperature creep and high fracture toughness.
Key words: TC11 Ti alloy； dual-property compressor disc； forging; deformation mechanism
