铸造2023，Vol.72Issue(12)：1548-1559,12.
ZL114A导弹舱体低压铸造工艺与组织性能研究
Research on Low-Pressure Casting Process and Microstructure Properties of ZL114A Missile Segment
樊振中 1杨欢 2丛延 3吴凌华 4李卫东 2罗磊 4苗健 5刘国 2彭石磊 2张勇为2
作者信息
- 1. 中国航发北京航空材料研究院,北京 100095||北京市先进铝合金材料及应用工程技术研究中心,北京 100095
- 2. 四川航天长征装备制造有限公司,四川成都 610100
- 3. 北京宇航系统工程研究所,北京 100076
- 4. 海装西安局驻成都地区第四军事代表室,四川成都 610100
- 5. 四川仨川航空科技股份有限公司,四川成都 610000
- 折叠
摘要
Abstract
Pro-CAST simulation and calculation software was used to calculate and analyze the ZL114A missile segment filling flow field,solidification temperature field and shrinkage distribution.In addition,15 kPa pouring temperatures and 720℃melting fluidity improved melting fluidity and shrinkage compensation,and reduced loosening distribution.The average tensile strength,yield strength,elongation and modulus of elasticity of the attached casting specimens in T6 state were 351 MPa,284 MPa,10.0%and 70.4 GPa respectively,and the average tensile strength,yield strength,elongation,and Brinell hardness of the body specimens were 343 MPa,280 MPa,8.4%and HBS116,corresponding to the coefficient of discretization CV of 1.5%.After adjusting the radial and high solidification shrinkage to 1.05%and 0.90%,respectively,the dimensional accuracy of the missile segment reached HB 6103-2004 CT8.The as-cast microstructure consisted of primary α-Al matrix,α-Al+Si eutectic,Mg2Si phase,and Al3Ti phase,among others.The average grain diameters of the α-Al matrix in the top,middle,and bottom regions were 96.8 μm,112.9μm and 117.6 μm,respectively,and the morphology of as-cast eutectic silicon phases of the plate edge and polygonal block was transformed into a spherical shape or a short and thick bar after the T6 heat treatment.The aspect ratio of the silicon phase decreased from 11.1 to 2.0,and numbers of microscopic tough nets were observed on the fracture surface,indicating that the material fracture mechanism was tough nest fracture..关键词
ZL114A铝合金/导弹舱体/低压充型/数值仿真/力学性能/硅相变质Key words
ZL114A casting alloy/missile compartment/low-pressure filling/numerical simulation/mechanical properties/silicon modification分类
矿业与冶金引用本文复制引用
樊振中,杨欢,丛延,吴凌华,李卫东,罗磊,苗健,刘国,彭石磊,张勇为..ZL114A导弹舱体低压铸造工艺与组织性能研究[J].铸造,2023,72(12):1548-1559,12.
