90W–Ni–Cu–Sn alloy/steel composite structure has been fabricated by co–sintering process at temperature as low as 1200 °C for 3 h using hot isotactic pressing (HIP). Microstructural studies revealed that a rich Ni, Cu and Sn transition layer was formed at the co–sintering interface due to the liquid γ–(Ni, Cu, Sn) migration, and no intermetallic compounds or other brittle phases were found at the interface. The shear tests indicated that the average shear strength of the co–sintered 90W–Ni–Cu–Sn/steel joint could reach 382.9 MPa. This successful attempt provides a new idea for the fabrication of tungsten alloy/steel composite structure component.

90W–Ni–Cu–Sn合金/钢复合结构通过热等规压制（HIP）在低至1200°C的温度下进行3小时的共烧结工艺制成。显微组织研究表明，由于液态γ–（Ni，Cu，Sn）的迁移，在共烧结界面上形成了丰富的Ni，Cu和Sn过渡层，并且在界面处未发现金属间化合物或其他脆性相。剪切试验表明，共烧结90W-Ni-Cu-Sn /钢接头的平均剪切强度可以达到382.9 MPa。这一成功的尝试为钨合金/钢复合结构构件的制造提供了新思路。