材料工程Issue(1)：93-98,6.
镍基单晶高温合金凝固缺陷研究进展
Advance in Research of Casting Defects of Directionally Solidified Nickel-based Single Superalloys
摘要
Abstract
Casting defects are deleterious to the mechanical properties of nickel-based single superal-loys, the decrease of casting defects is benefit for improving mechanical properties and reducing the cost. Some important casting defects formed in the directional solidification process are discussed, including porosity, freckles, misorientation and stray grains. Based on the features and formation mechanisms for the defects, the influence of alloy composition, processing parameters and casting structure on the casting defects is analyzed. Meanwhile, the suggestions for reducing casting defects are pointed out.关键词
镍基单晶高温合金/定向凝固/凝固缺陷/工艺参数Key words
nickel-based single superalloy/ directional solidification/ casting defect processing parameter分类
矿业与冶金引用本文复制引用
赵新宝,刘林,杨初斌,张军,李玉龙,傅恒志..镍基单晶高温合金凝固缺陷研究进展[J].材料工程,2012,(1):93-98,6.基金项目
国家自然科学基金(50931004,51101120) （50931004,51101120）
国家973项目(2010CB631202,2011CB610406) （2010CB631202,2011CB610406）
中国博士后科学基金(20100481361,201104680) （20100481361,201104680）
凝固技术国家重点实验室(西北工业大学)博士后基金(09BZ-2010) （西北工业大学）
