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首页> 外文期刊>Intermetallics >Effect of brazing temperature and brazing time on the microstructure and tensile strength of TiAl-based alloy joints with Ti-Zr-Cu-Ni amorphous alloy as filler metal
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Effect of brazing temperature and brazing time on the microstructure and tensile strength of TiAl-based alloy joints with Ti-Zr-Cu-Ni amorphous alloy as filler metal

机译：钎焊温度和钎焊时间对Tial-Zr-Cu-Ni非晶合金作为填料金属轧制基合金关节微观结构和拉伸强度的影响

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AbstractAn amorphous Ti-37.5Zr-15Cu-15Ni (wt.%) ribbon fabricated by vacuum arc remelting and rapid solidification was used as filler metal to vacuum braze TiAl alloy (Ti-45Al-2Mn-2Nb-1B (at.%)). The effects of brazing temperature and time on the microstructure and strength of the joints were investigated in details. The typical brazed joint major consisted of three zones and the brazed joints mainly consisted of α2-Ti3Al phase, α-Ti phase and (Ti, Zr)2(Cu, Ni) phase. When the brazing temperature varied from 910?°C to 1010?°C for 30?min, the tensile strength of the joint first increased and then decreased. With increasing the brazing time, the tensile strength of the joint increased. The maximum room temperature tensile strength was 468?MPa when the specimen was brazed at 930?°C for 60?min. All the fracture surfaces assumed typical brittle cleavage fracture characteristic. The fracture path varied with the brazing parameter and cracks preferred to initiate at (Ti, Zr)2(Cu, Ni) phase and propagation path were mainly determined by the content and distribution of α-Ti phase and (Ti, Zr)2(Cu, Ni) phase.Highlights?The typical brazed joint mainly consisted of α2-Ti3Al phase, α-Ti phase and (Ti, Zr)2(Cu, Ni) phase.?The interfacial microstructure and tensile strength of the brazed joint were determined by the brazing condition.?When the brazing parameter was 930 °C/60 min, the room temperature tensile strength reached the largest 468 MPa.?All the fracture surfaces assumed typical brittle cleavage fracture characteristic.]]>
机译：<！[CDATA [ 抽象 由真空弧重熔和快速制造的无定形TI-37.5ZR-15CU-15NI（WT.％）带用作真空钎焊Tial合金（Ti-45Al-2Mn-2NB-1b（at。％））用作填料金属。研究了钎焊温度和时间对关节微观结构和强度的影响。典型的钎焊联合专业由三个区域组成，钎焊接链主要由α 2 - ti 3 Al相，α-Ti相和（Ti，Zr） 2 （Cu，Ni）相。当钎焊温度从910℃变化至1010Ω°C时30？分钟，关节的拉伸强度首先增加，然后降低。随着钎焊时间的增加，关节的拉伸强度增加。当样品钎焊时，最高室温抗拉强度为468μm≤MPa。所有裂缝表面都均致典型的脆性裂解性特性。用钎焊参数和裂缝变化的裂缝路径优选在（Ti，Zr） 2 （Cu，Ni）相和传播路径主要决定α-Ti相和（Ti，Zr） 2 （Cu，Ni）相的含量和分布。 亮点 ？ 典型的钎焊接接头主要由α 2 -ti 3 AL相，α-TI相和（TI，ZR） 2 （Cu，ni）阶段。 ？ 钎焊接头的界面微观结构和拉伸强度由钎焊状态确定。 ？ 当钎焊参数为930时°C / 60分钟，房间温度拉伸强度达到最大的468MPa。 ？< / ce：标签> 所有裂缝表面都假定典型的脆性裂解骨折特性。 ]]>

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