何永胜,胡锐,罗文忠,孙峰,王凯旋,李金山,刘向宏.磁场强度对Ti-1023合金凝固组织和Fe偏析的影响[J].稀有金属材料与工程,2017,46(10):3063~3067.[He Yongsheng,HuRui,Luo wenzhong,Sun feng,Wang Kaixuan,Li jinshan,Liu xianghong.Effect of Stirring Magnetic Filed on the Macrostructure and Composition of Ti-1023 Alloy Ingot[J].Rare Metal Materials and Engineering,2017,46(10):3063~3067.]
磁场强度对Ti-1023合金凝固组织和Fe偏析的影响
投稿时间:2015-07-15  修订日期:2016-01-03
中文关键词:  Ti-1023合金  搅拌磁场  凝固组织  Fe偏析
基金项目:中央高校基本科研业务费前沿研究计划(2009QZZD007);湖南省科技重大专项(2010F51004);湖南省研究生科研创新项目(CX2012B044)
中文摘要:
      研究了工业化制备的超大规格Ti-1023合金铸锭在不同磁场强度下的纵向凝固组织和Fe元素成分分布,并对其影响进行了探讨。结果表明:当磁场强度为10Gs和30Gs时,铸锭组织主要由粗大柱状晶,竹节状的小柱状晶和等轴晶组成;当磁场搅拌强度为20Gs时,凝固组织转变为由底部粗大柱状晶和细小等轴晶组成。Ti-1023合金铸锭中Fe元素在不同磁场强度下遵循正偏析规律,沿铸锭长度方向Fe元素含量从底部到顶部逐渐增加,沿径向从边缘到中心逐渐增加。随着磁场强度从10Gs增加到30Gs,合金元素Fe的宏观偏析率先减小后增大。
Effect of Stirring Magnetic Filed on the Macrostructure and Composition of Ti-1023 Alloy Ingot
英文关键词:Ti-1023 alloy  Magnetic filed  Solidification microstructure  Fe segregation
英文摘要:
      Ti-1023 titanium alloy has attracted considerable attentions as aircraft structural material because of its high speci?c strength, good fracture toughness, and excellent stress corrosion resistance and enhanced processing characteristics. However, the shortcoming in Fe element segregation in large specification ingot retarded its practical application. Magnetic filed can be used in overcoming this deficiency at certain degree. In this paper, The influence of magnetic filed on the solidification macrostructure and Fe content of Ti-1023 under vacuum arc remelting was investigated.The results show that when the Magnetic filed T (T=10Gs, T=30Gs) the solidified microstructure is composed of bulky columnar crystal, small bamboo-like columnar crystal and equiaxed grains. When the Magnetic filed T=20Gsthe solidified microstructure is completely composed of bulky columnar crystal and equiaxed grains. The law of Fe segregation abide by normal segregation ,Fe content increases gradually from the bottom to the top of ingots along axial direction and the degree of macro segregation is greater in the radial direction in the middle of the ingot versus the top and bottom., The macrosegregation rate of Fe element increases ?rstly and then decreases with different Magnetic filed.
作者单位E-mail
何永胜 西北工业大学凝固技术国家重点实验室 heysh1210@126.com 
胡锐 西北工业大学凝固技术国家重点实验室  
罗文忠 西部超导材料科技股份有限公司 陕西省航空材料工程实验室  
孙峰 西部超导材料科技股份有限公司 陕西省航空材料工程实验室  
王凯旋 西部超导材料科技股份有限公司 陕西省航空材料工程实验室;西部超导材料科技股份有限公司 陕西省航空材料工程实验室  
李金山 西北工业大学凝固技术国家重点实验室  
刘向宏 西部超导材料科技股份有限公司 陕西省航空材料工程实验室  
摘要点击次数: 376
全文下载次数: 375
查看全文  查看/发表评论  下载PDF阅读器
关闭