高硼碳镍基高温合金的研究

来源期刊：中南大学学报(自然科学版)1980年第2期

论文作者：郭豫稼 唐仁正

文章页码：27 - 37

关键词：镍基高温合金； 强化相； 固溶体合金； 不同温度； 腐蚀介质； 抗蚀性能； 组织形态； 过热处理； 热稳定性； 铬含量

摘    要：在Ni—Cr固溶体合金中,同时加入过量的硼和碳后能形成一种以M₂₃（BC）₆为强化相的沉淀硬化型合金。认为B、C同时加入,能促使它们在合金中的均匀分布,所形成的强化相热稳定性好,其组织形态和分布可以通过热处理来改善。合金在高温腐蚀介质中暴露。其表面铬含量能保持在Ni—Cr基合金所要求的“临界”耐蚀含量,从而保证了合金的抗蚀性能。

Abstract: When both boron and carbon are added in excess in the nichrome-basealloy,a preciptation hardening alloy with strenthening phase of M₂₃(BC)₆ canbe formed.It is shown that both boron and carbon added to the Ni-Cr alloy can promotetheir homogeneous distribution,and that the strenthening phase of M₃₃（BC）₆ whose morphology and distribution in the matrix can be improved by meansof heat treatment,posseses higher thermal stability.In addition,as this alloy is exposed to corrosion medium at high tempe-rature,the critical chromium content required for the Ni-Cr alloy to resistcorrosion can be still kept in the surface,thus rendering this alloy with anexcellent anti-corrosion property at high temperature.