铸造2023，Vol.72Issue(12)：1614-1618,5.
冷铁和冒口对ZL702A合金组织和力学性能的影响
Effects of Chills and Riser on Microstructure and Mechanical Properties of ZL702A Alloy
毛郭灵 1李宇飞 2王根全 1蒲博闻 1李泽华 2周海涛1
作者信息
- 1. 中国北方发动机研究所(天津),天津 300400
- 2. 中国机械总院集团沈阳铸造研究所有限公司,辽宁沈阳 110022
- 折叠
摘要
Abstract
In this paper,the effects of chills and riser on the microstructure and mechanical properties of the ZL702A alloy were studied by metallographic microscope and tensile test at room temperature.The results showed that the mesh number of furan resin sand was 50/100,the resin content was 1.0%,and the curing agent was 0.4%.Within limits,the thicker the chill was,the denser the microstructure was,and the higher the comprehensive mechanical properties were.In the actual production process of large and complex structural castings,the chill shall be arranged according to the required properties,microstructure and cooling rates,and the chill thickness shall be increased as much as possible on the premise of ensuring the sequential solidification of castings.The riser samples with large root size had small secondary dendrite arm spacing and high comprehensive mechanical properties.When the riser was in the middle of the ingot,the secondary dendrite arm spacing of the alloy was small,and the comprehensive mechanical properties of the alloy were high.关键词
ZL702A/冷铁/冒口/组织/力学性能Key words
ZL702A/chill/riser/microstructure/mechanical properties分类
矿业与冶金引用本文复制引用
毛郭灵,李宇飞,王根全,蒲博闻,李泽华,周海涛..冷铁和冒口对ZL702A合金组织和力学性能的影响[J].铸造,2023,72(12):1614-1618,5.
