Al-Li合金无中间层扩散焊接工艺研究

Study on no-interlayer diffusion welding technology of Al-Li alloy

对Ａｌ－Ｌｉ合金在无中间层的条件下扩散焊接进行了研究，焊件在焊接前进行化学处理，然后于 １０－３Ｐａ真空中，温度 ５４０、压力 ４ ＭＰａ、保温 ２ｈ的条件下扩散＋焊接，可使焊接试件的剪切强度达到母材的７５％左右．

A study on the diffusion welding of Al-Li alloy without interlayer was carried out. Test pieces were chemically treated before diffusion welding which was conducted in a vacu- um of 10-3 Pa, at a temperature of 540 and a pressure of 4 MPa for 2 hours. The resultant has a shear strength about 75% that of the base material.