作为一种综合了铸造与粉末冶金优点制备近成形颗粒增强金属基复合材料的方法,喷射共沉积技术及其应用受到了广泛的关注.本文综述了喷射沉积颗粒增强金属基复合材料的发展现状;介绍了喷射共沉积技术的原理;讨论了喷射共沉积过程中金属液体对增强相的捕获机理和凝固前沿对颗粒的捕获问题;介绍了喷射沉积颗粒增强金属基复合材料的装置及工艺参数的控制;着重介绍了喷射沉积材料的组织性能及致密化工艺,提出通过旋球同步预致密后再分别进行往复镦-挤和等径角挤压实现沉积坯的大塑性变形达到完全致密与冶金结合;指出了喷射沉积金属基复合材料将向组织均匀化、韧性化、完全致密化方向发展.
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