The densification mechanism and microstructure evolution of W-10Ti sputtering target prepared by spark plasma sintering (SPS) method at a temperature ranges from 900 to 1600 °C, with dwelling time of 6 min and fixed pressure of 30 MPa were investigated. Densification occurs mainly at low temperatures (900 to 1300 °C), while grain growth occurs at high temperatures (1400 to 1600 °C). The creep model has been used to reveal the densification process. The effective stress exponent n is calculated systematically, which indicates that the densification process is mainly due to the particle rearrangement (n < 1), grain boundary diffusion (n = 1–2), and dislocation climbing (n = 3.77 or 4.14). In addition, the apparent activation energy Q_d is calculated to be 119.30 and 271.79 kJ/mol when the effective stress exponent n is equal to 1 and 2, respectively. It is also found that the microstructure of W-10Ti alloys is greatly affected by the sintering temperatures. The solution between W and Ti significantly improves with the increase of the sintering temperature. The solubility of W in βTi(W) exceeded the eutectoid point (28.97 wt% W) and the eutectoid structure (βW(Ti) + αTi) forms in cooling process when the temperature is up to 1300 °C. With the temperature increasing to 1500 °C, the composition of the βTi(W) phase is located in the miscibility gap of the (βTi(W), βW(Ti)) system, which tends to decompose in to βTi(W) and βW(Ti) phases.

研究了通过火花等离子体烧结（SPS）法在900〜1600℃的温度下，停留时间为6min，固定压力为30MPa的条件下制备的W-10Ti溅射靶的致密化机理和组织演变。致密化主要发生在低温（900至1300°C）下，而晶粒长大则发生在高温（1400至1600°C）下。蠕变模型已用于揭示致密化过程。系统计算出有效应力指数n，这表明致密化过程主要是由于粒子重排（n  <1），晶界扩散（n  = 1-2）和位错爬升（n  = 3.77或4.14）引起的。另外，表观活化能当有效应力指数n等于1和2时，Q _d计算得出为119.30和271.79 kJ / mol 。还发现，W-10Ti合金的显微组织受烧结温度的影响很大。W和Ti之间的溶液随着烧结温度的升高而显着提高。W在βTi（W）中的溶解度超过共析点（28.97 wt％W），当温度高达1300°C时，在冷却过程中会形成共析结构（βW（Ti）+αTi）。随着温度升高至1500°C，βTi（W）相的组成位于（βTi（W），βW（Ti））体系的可混溶间隙中，并易于分解为βTi（W）和。 βW（Ti）相。