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测定了用转鼓法制备的Pd_(82·5)M_1Si_(18·5)非晶态合金的应力松弛和延脆转变特性.发现前过渡金属Hf,Ta,W,Re显著提高该非晶态合金的延脆转变温度T_B和延脆转变激活能△E_B,后过渡金属中的Os,Pt对其影响较小,而Ir则使T_B下降较多.添加前、后两类不同的过渡金属PdSi_(16■)非晶态合金的延脆转变方式也有所不同.比较了添加元素对延脆转变温度T_B、玻璃转变温度T_g、延脆转变激活能△E_B以及玻璃转变激活能△E_g的影响.用Gaskell模型和Engel-Brewer过渡金属电子理论解释了前、后过渡金属对PdSi_(16·5),非晶态合金延脆转变的不同影响.
The stress relaxation and ductile transformation properties of Pd_ (82.5) M_1Si_ (18.5) amorphous alloy prepared by drum method were measured.The former transition metals Hf, Ta, W, Re were significantly increased The ductile brittle transition temperature T_B and the ductile transition activation energy △ E_B of the alloy, while the influence of Os and Pt in the post-transition metal is small, while Ir decreases the T_B more.With the addition of two kinds of transition metal PdSi_ (16 ■) The ductile brittle transition of amorphous alloy is also different, and the effect of additive elements on the ductile transition temperature T_B, the glass transition temperature T_g, the delayed activation energy △ E_B and the glass transition activation energy △ E_g were compared. Gaskell model and Engel-Brewer transition metal electron theory are used to explain the different effects of the transition metals on the ductile transition of PdSi_ (16.5) and amorphous alloys.