W/CuCrZr鎢銅合金熱等靜壓焊接Hot isostatic pressing joining of W/CuCrZr alloy

采用熱等靜壓(HIP)焊接技術(shù)制備W/CuCrZr偏濾器部件焊接模塊，分別研究以物理氣相沉積(PVD)制備的40 μm銅涂層作為過渡層，以2 mm厚的TU1銅片作為過渡層以及無過渡層3種結(jié)構(gòu)模塊的焊接界面質(zhì)量。通過掃描電子顯微鏡(SEM)、超聲波無損探傷儀(NDT)、力學(xué)拉伸試驗(yàn)機(jī)和電子束高熱負(fù)荷試驗(yàn)裝置分別對焊接模塊的微觀形貌、焊接缺陷、力學(xué)性能和高熱負(fù)荷性能進(jìn)行檢測分析。結(jié)果表明：HIP焊接工藝參數(shù)為(940 ℃, 120 MPa, 2 h)時(shí)，采用40 μm銅涂層為過渡層的模塊焊接界面結(jié)合質(zhì)量最高，且沒有缺陷，經(jīng)過入射功率密度為20 MW/m²的高熱負(fù)荷試驗(yàn)也沒有失效。因此，該工藝是3種工藝參數(shù)下鎢/銅合金偏濾器模塊制造的最佳制備技術(shù)。

The W/CuCrZr alloy divertor component module was manufactured by hot isostatic pressing (HIP) technique. The interface properties of three modules which have the interlayers with 40 μm thick Cu coating produced by PVD method, 2 mm thick TU1Cu sheet and no interlayer, respectively, were investigated. The microstructure, welding defect, shear strength and high heat load(HHL) test properties were tested by scanning electron microscope (SEM), ultrasonic nondestructive testing (NDT) equipment, mechanical cupping machine and electron beam epuipment(EMS-60), respectively. The results show that the joint performance of module with the interlayer of 40 μm thick Cu coating is the best, the highest bonding strength and free defect are achieved under the HIP condition of (940 ℃, 120 MPa, 2 h). After the screening test with incident power density of 20 MW/m², the module also has no failure. Therefore, the process can be the optimal technique applied to the manufacturing of divertor component among the three techniques.

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