Abstract
QCr0.8 was electron-beam welded to TC4 and the effect of the intermetallic layer (IMC-layer) on the mechanical properties of the joint was investigated. The IMC-layers are joint weaknesses at the Cu fusion line in centered welding and at the Ti fusion line when the beam is deviated towards Cu. A new method referred to as electron-beam superposition welding was presented, and the optimal welding sequence was considered. The IMC-layer produced by centered welding was fragmented and remelted during Cu-side non-centered welding, giving a finely structured compound layer and improved mechanical properties of the joint. The tensile strength of joint is 276.0 MPa, 76.7 that of the base metal.
| Original language | English |
|---|---|
| Pages (from-to) | 2416-2420 |
| Number of pages | 5 |
| Journal | Transactions of Nonferrous Metals Society of China (English Edition) |
| Volume | 22 |
| Issue number | 10 |
| DOIs | |
| State | Published - Oct 2012 |
Keywords
- Cu alloy
- IMC-layer
- Ti alloy
- electron beam superposition welding
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