Investigation of the joinability of B4c reinforced Alumix 231 based composite by using tig welding techniques

GÖKMEN U., ATEŞ H., Karakoc H., ÇİNİCİ H.

European International Powder Metallurgy Congress and Exhibition, Euro PM 2012, Basel, Switzerland, 16 - 19 September 2012, vol.1 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 1
  • City: Basel
  • Country: Switzerland
  • Gazi University Affiliated: Yes

Abstract

In this study, weldability of B4C reinforced Alumix 231 based composite materials produced by using powder metallurgy techniques has been investigated. Various amount (0-5-10-15 (% wt) of B4C particles were added to the pre-alloyed Alumix 231 (Al-Cu %2,5-Mg %0,5-Si %14) powders and then mixed in a three dimensional turbula for 45 min. Powders were compacted and sintered in argon atmosphere at 640 °C for 4 h. These blocks were welded by using Tungsten Inert Gas welding (TIG) at 25 V, 135 A and 14 lt/min welding parameters in Ar atmosphere. Macro and micro examination have been carried out and effect of reinforcing elements on the structure of weld metal has been evaluated.