快淬工艺能明显地提高Ti08Zr0.2Mn05V0.5Ni1.0贮氢合金的放电容量,而且淬速与放电容量之间在一定情况下出现峰值.XRD、SEM、TEM分析结果表明:快淬合金由细小的枝晶组成,随着淬速增加,晶粒更加细小;快淬合金很难形成非晶,当淬速达到32m/s时仅有少量非晶出现,主体仍是微晶和纳米晶;Ti0.8Zr0.2Mn0.5V0.5Ni1.0合金是多相结构,低淬速快淬态合金和铸态合金由大量的六方C14 Laves相和少量的TiNi非Laves相组成,当淬速达到8 m/s时,合金中开始出现立方C15 Laves相.快淬合金中能大量吸氢的C14、C15相的总含量更多,从而使快淬钛基合金的放电容量有较大的提高.合金中各个相的相对含量随着淬速的改变而改变,使C14、C15相的总含量与淬速之间并不是简单的线性关系.
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