マグネシウム合金の鋳造材と展伸材の摩擦圧接

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タイトル別名
  • Friction welding of cast-to-wrought magnesium alloy.
  • マグネシウム ゴウキン ノ チュウゾウザイ ト テンシンザイ ノ マサツ アッ

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抄録

Wrought magnesium alloy AZ31 was friction welded to magnesium alloy castings AZ91 using a brake type friction welding machine. Microstructure and mechanical properties of friction welded joint were investigated. Microstructures of the first weld zone are quite similar to those of the second weld zone. A fine grain structure is observed on the side of alloy AZ91 near the weld interface, while on the heat-affected zone of alloy AZ31, a modified fiber structure is observed along the flow direction of burr. The hardness at the weld interface is higher than that of the base metals. In the case of alloy AZ91, the hardness in heat-affected zone is higher than that in the base metal, and in the case of alloy AZ31, it is nearly equal to that of the base metal. The tensile strength of joints welded at a friction pressure between 50MPa and 60MPa is 90% to 106% of the castings. However the elongation of welded joints is inferior to that of alloy AZ91.

収録刊行物

  • 軽金属

    軽金属 44 (10), 562-566, 1994

    一般社団法人 軽金属学会

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