Piston comprising superalloy-based build-up layer

A piston for a reciprocating piston engine includes a piston body including a piston body and a superalloy build-up welding layer covering and metallurgically bonded to a portion of the piston body. The superalloy build-up welding layer includes a first weld layer disposed on the piston body, the first weld layer including a first plurality of abutment weld beads. The superalloy build-up welding layer also includes a second weld layer disposed on the first weld layer, the second weld layer including a second plurality of adjoining weld beads. 一种用于往复式活塞发动机的活塞包括活塞主体，所述活塞主体包括活塞形体和包覆所述活塞形体的一部分并与其冶金学结合的超级合金堆焊层。所述超级合金堆焊层包括设置在所述活塞形体上的第一焊接层，所述第一焊接层包括第一多个邻接焊道。所述超级合金堆焊层还包括设置在所述第一焊接层上的第二焊接层，所述第二焊层包括第二多个邻接焊道。