形变与热处理对CuCr合金中Cr相形貌及合金性能的影响

Effect of Deformation and Heat Treatment on Morphology of Cr Phase and Properties of CuCr Alloy

摘要:

研究了CuCr合金在不同形变与热处理制度下，组织中Cr相形貌、合金力学性能及导电性能的变化。结果表明：当变形量达到70％时，合金中的Cr粒子产生严重的变形，且有开裂现象。在随后高温热处理过程中开裂的Cr粒子发生熔断和球化。适当的形变与热处理能改善CuCr合金的力学性能与导电性能，并从微观组织方面对其原因进行了分析。

Abstract:

The change of morphology of Cr phase, mechanical properties and electrical conductivity of CuCr alloy under different cold deformation quantity and heat treatment were studied. The results show that when reduction is up to 70%, Cr particles are deformed heavily, and some of Cr particles are broken. After the following high temperature heat treatment, broken Cr particles in the microstructure dissolves, and tend to turn into spherical morphology. As a results the mechanical properties and electrical conductivity of CuCr alloy are improved by means of proper deformation and heat treatment, and its mechanism was analyzed from microstructure.