铸造2017，Vol.66Issue(6)：548-553,6.
熔体处理温度对K424高温合金凝固组织和性能的影响
Effect of Melt Treatment Temperature on Solidification Microstructure and Properties of K424 Superalloy
摘要
Abstract
The influences of melt treatment temperature on the solidification microstructure and mechanical properties of K424 cast superalloy are studied. The results show that with the increase of melt treatment temperature, the carbide MC becomes finer and more homogeneous. Both the grain size and secondary dendrite arm spacing are decreased, and the micro segregation is also improved. When the melt treatment temperature is over 1600℃, the tensile plasticity and the stress-rupture properties are improved evidently. But the crucible reaction is intensified when the melt treatment temperature is too high, which leads to the significant increase of oxygen content and decrease of tensile strength and rupture life at 1650℃.关键词
高温合金/熔体处理/凝固组织/力学性能Key words
superalloy/melt treatment/solidification microstructure/mechanical property分类
矿业与冶金引用本文复制引用
杨敬明,于波,苏贵桥,税国彦,李长春,娄延春..熔体处理温度对K424高温合金凝固组织和性能的影响[J].铸造,2017,66(6):548-553,6.基金项目
沈阳市科技计划项目资助(F16-059-2-00) （F16-059-2-00）
