公开(公告)号：US20220152750A1

公开(公告)日：2022-05-19

申请号：US17594213

申请日：2019-04-24

Applicant: ARCONIC TECHNOLOGIES LLC

Inventor： Tao ZHOU ,  Stephen F. BAUMANN ,  Baolute REN

IPC: B23K35/02 ,  B32B15/01 ,  B23K35/00 ,  B23K35/28 ,  B23K20/04 ,  C22C21/02

Abstract: An apparatus, material and method for forming a reliably roll-bonded, multi-layer aluminum alloy brazing sheet has a core of 2XXX, 3XXX, 5XXX or 6XXX alloy, a braze liner of 4XXX alloy and an interliner with Mn in the range of 0.2 to 1.0 wt. % and Si in the range of 0.31-1.0 wt. %. Alternatively, Mg in the range of 0.1 to 0.5 wt. % may be present in the interliner. Additional layers such as a second braze liner may be present for providing an inner surface of a heat exchanger. An additional interliner may optionally be used between the core the inner surface layer. The material may be used for highly corrosive environments like an EGR cooler.