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2024-T3铝合金搅拌摩擦焊接中搅拌头尺寸和搅拌针形状影响的数值模拟

Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2014-10-01

Journal: 中国有色金属学报(英文版)

Included Journals: SCIE、CSCD、ISTIC、EI

Volume: 24

Issue: 10

Page Number: 3293-3301

ISSN: 1003-6326

Key Words: 铝合金;搅拌摩擦焊;完全热力耦合模型;热生成;能量历史

Abstract: 采用完全热力耦合模型研究了搅拌针直径、轴肩直径以及搅拌针锥角对2024-T3铝合金搅拌摩擦焊接过程中热生成、材料变形和能量历史的影响。结果表明:相比搅拌针接触面,轴肩接触面对搅拌摩擦焊接的热生成起主要作用。增加轴肩直径和减小搅拌针直径均能增加焊接温度,但是轴肩尺寸变化的影响更为明显。与6061-T6铝合金的搅拌摩擦焊接过程相比,2024-T3铝合金搅拌摩擦焊接的能量输入明显增加,同时塑性耗散与摩擦耗散的能量比减小。

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