一种增强铝钨惰性气体焊接金属的新技术：使用碳纳米管/铝复合材料作为填充金属。

A new technique for the strengthening of aluminum tungsten inert gas weld metals: using carbon nanotube/aluminum composite as a filler metal.

机构信息

Technical Inspection Engineering Department, Petroleum University of Technology, Abadan, Iran; Health, Safety & Environment Department, Bandar Imam Petrochemical Complex, Mahshahr, Iran.

出版信息

Micron. 2013 Nov-Dec;54-55:28-35. doi: 10.1016/j.micron.2013.07.004. Epub 2013 Jul 30.

DOI:10.1016/j.micron.2013.07.004

PMID:23948441

Abstract

The effect of multi-walled carbon nanotube (MWCNT) on the mechanical properties of aluminum multipass weld metal prepared by the tungsten inert gas (TIG) welding process was investigated. High energy ball milling was used to disperse MWCNT in the aluminum powder. Carbon nanotube/aluminum composite filler metal was fabricated for the first time by hot extrusion of ball-milled powders. After welding, the tensile strength, microhardness and MWCNT distribution in the weld metal were investigated. The test results showed that the tensile strength and microhardness of weld metal was greatly increased when using the filler metal containing 1.5 wt.% MWCNT. Therefore, according to the results presented in this paper, it can be concluded that the filler metal containing MWCNT can serve as a super filler metal to improve the mechanical properties of TIG welds of Al and its alloys.

摘要

研究了多壁碳纳米管（MWCNT）对钨极惰性气体（TIG）焊接工艺制备的铝合金多道焊缝金属力学性能的影响。采用高能球磨法将 MWCNT 分散在铝粉中。首次通过球磨粉末的热挤压制备了碳纳米管/铝复合填充金属。焊接后，研究了焊缝金属的拉伸强度、显微硬度和 MWCNT 分布。试验结果表明，当使用含有 1.5wt.%MWCNT 的填充金属时，焊缝金属的拉伸强度和显微硬度大大提高。因此，根据本文的研究结果，可以得出结论，含有 MWCNT 的填充金属可以作为超级填充金属，提高铝合金 TIG 焊缝的力学性能。