The metallurgical structures, mechanical properties and fractographs of EB welded 6061-T6 aluminum alloy joint were studied by means of metallography, mechanical test and SEM technology.
2
本文叙述了这种钻杆的焊接性，并与采用热镦粗工艺生产的钻杆管体金相组织和机械性能进行了对比。
The mechanical properties and metallographic structures of the friction welded drill rod and the hot upset forged drill rod pipe are compared.
3
对在拉拔过程中出现断裂的焊接用盘条进行化学成分和金相组织检测。
To examine chemistry composition and microstructure of steel wire rod for welding of fracture during drawing.
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