摘要:
PROBLEM TO BE SOLVED: To provide a joining method of an aluminum member capable of uniformly and stably joining mutual aluminum members, even when the area of a joint object surface is large.SOLUTION: The joining method of the aluminum member is provided for joining a first aluminum member 10 and a second aluminum member 20 by bringing the first aluminum member 10 composed of aluminum or an aluminum alloy and the second aluminum member 20 composed of the aluminum or the aluminum alloy into pressure contact with each other. The joining method of the aluminum member includes an uneven structure forming process of forming an uneven structure on the respective joint object surfaces in the first aluminum member 10 and the second aluminum member 20 before bringing the first aluminum member 10 and the second aluminum member 20 into pressure contact with each other, and a pressure contact process of bringing the first aluminum member 10 and the second aluminum member 20 into pressure contact with each other in a state of opposing the joint object surfaces, in this order.