摘要
通过两种锻造方案试制TC4合金450 mm超大规格棒材。分析了两种方案生产的棒材组织、力学性能和探伤杂波水平的差异。结果表明:铸锭经过镦-拔工艺开坯,进行1次"高低高"锻造,然后在相变点以下30～50℃进行变形量大于85%的成品锻造,可生产出组织和力学性能满足GJB 1538标准要求、探伤满足GB/T 5193-A级要求的TC4合金450 mm大规格棒材,且棒材的组织均匀性好。
The large-sized TC4 bars with 6450 mm were trial -manufactured by using two solutions, to analysis the discrepancy of transverse and longitudinal structure, mechanical properties and flaw detection clutter level. The results show that the bars produced can meet the mechanical properties in GJB 1538, meet GB/T5193-A level in flaw detection, and with good homogeneity of structure by using the forging process that intermediate forging adopt ＂highlow-high＂ at a time after upsetting-pull breakdown process, and the forging of finished products is performed under the temperature 25- 45 ℃ below the phase transition temperature and the deformation of the finished forging is greater than 85%.
出处
《钛工业进展》
CAS
2012年第2期28-31,共4页
Titanium Industry Progress
关键词
TC4合金
大规格棒材
锻造工艺
力学性能
显微组织
TC4 alloy
large-sized bars
forging process
mechanical properties
microstrueture
