發(fā)布時(shí)間：2019-01-03 13:55

【摘要】：為細(xì)化鎢晶粒,采用粉末冶金方法通過添加加量Ti C于鎢基體中制備W-Ti C合金,研究了微量Ti C的添加對鎢性能與顯微組織的影響。結(jié)果表明:當(dāng)Ti C的添加量為1%(質(zhì)量分?jǐn)?shù)),燒結(jié)溫度為1890℃時(shí),W-Ti C合金具有最佳性能,其拉伸強(qiáng)度可達(dá)401 MPa,致密度為97.4%;添加的Ti C粉末以球狀二次相粒子形式分布于晶界和晶內(nèi),與純鎢相比,Ti C的添加有效地抑制了晶粒長大,對鎢基體起到細(xì)晶強(qiáng)化與彌散強(qiáng)化作用。
[Abstract]:In order to refine tungsten grain, W-Ti C alloy was prepared by adding Ti C in tungsten matrix by powder metallurgy. The effect of trace Ti C addition on the properties and microstructure of tungsten was studied. The results show that when the content of Ti C is 1% (mass fraction) and the sintering temperature is 1890 鈩，

本文編號(hào)：2399469