Cu-Al-Ni-Mn-Ti合金X相
来源期刊：中南大学学报(自然科学版)1999年第5期
论文作者：杨杰 汪明朴 尹志民
文章页码：512 - 514
关键词：金相;热处理;Cu基形状记忆合金;X相
Key words：metallography; heat treatment; Cu based shape memory alloy; X-phase
摘 要：用金相、电子能谱微区成分分析等方法 研究了Cu-Al-Ni-Mn-Ti合金中X相的形成及热处理对X 相的大小、数量及分布的影响．结果表明：X相是在铸锭凝固过程中直接从液相中结晶形成的，在均匀化过程中，枝晶逐渐溶解、断开，形成游离的颗粒状X相；在 热处理过程中，逐渐球化形成XL相．当热处理温度较高时，XL相会部分地溶解，冷却时以脱溶方式形成大量弥散分布的XS相；而当热处理温度降低时，XS相又重新聚集形成XL相．
Abstract: This paper deals with forming of X-phase and the effect of heat treatment on size, amount and distribution of X phase in Cu Al Ni Mn Ti alloy by optical microscope observation and SEM. The results show that the X-phase is crystallized directly from the liquid phase in the course of ingot freezing. In the heat treatment process, the X-phase becomes spheroid and forms the XL phases. If the temperature of heat treatment is high, XL phase will solute partly and form a large number of disperse XS phases in the course of cooling. If the temperature is low, the XS phase will gather again and form the XL phase.
