石磊,雷力明,付鑫,杨阳,付俊.Fe含量对激光立体成形TC4合金组织性能的影响[J].稀有金属材料与工程,2020,49(5):1674~1680.[Shi Lei,Lei Liming,Fu Xin,Yang Yang,Fu Jun).Effect of Fe content on the microstructure and tensile properties of TC4 alloy fabricated by laser solid forming[J].Rare Metal Materials and Engineering,2020,49(5):1674~1680.]
Fe含量对激光立体成形TC4合金组织性能的影响
投稿时间:2019-04-10  修订日期:2019-07-13
中文关键词:  激光立体成形  TC4  Fe含量  拉伸性能
基金项目:国家重点研发计划(2017YFB1103803, 2017YFB1103004)
中文摘要:
      研究了Fe含量(0.026%、0.18%,质量分数)对激光立体成形TC4合金组织及拉伸性能的影响。对沉积态及固溶时效处理后的组织进行了分析:两种Fe含量下,沿沉积方向组织均为由贯穿多个熔覆层的β柱状晶组成,内部为魏氏组织且晶界处有较小的α集束;固溶时效处理后,随着Fe含量增加,沿沉积方向组织由粗大的柱状晶转变为细小柱状晶,发生了明显再结晶。热处理后试样室温拉伸性能均高于锻件标准要求,沿沉积方向拉伸性能随Fe含量升高而升高,而Fe含量对垂直方向上拉伸强度影响不大。
Effect of Fe content on the microstructure and tensile properties of TC4 alloy fabricated by laser solid forming
英文关键词:Laser solid forming  TC4  Fe content  tensile properties
英文摘要:
      The effect of Fe content on the microstructure and tensile properties of TC4 alloy manufactured by laser solid forming was investigated. The analysis of microstructure evolution of samples during heat treatment process showed that Fe didn’t affect the microstructure of as-built samples, consisting of coarse columnar β grains in the longitudinal section, while after heat treatments the coarse columnar β grains in the longitudinal section were translated into fine columnar β grains with increasing Fe content from 0.026%wt. to 0.18%wt, suggesting the occurrence of recrystallization. The tensile strength of samples at room temperature after heat treatments was higher than the standard requirements for forging. The tensile strength parallel to building direction was improved with the increasing of Fe, as for the strength perpendicular to building direction was insensitive to Fe content.
作者单位E-mail
石磊 中国航发上海商用航空发动机制造有限责任公司 zxhsl2008@163.com 
雷力明 中国航发上海商用航空发动机制造有限责任公司  
付鑫 中国航发上海商用航空发动机制造有限责任公司  
杨阳 中国航发上海商用航空发动机制造有限责任公司  
付俊 中国航发上海商用航空发动机制造有限责任公司  
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