“…As a promising solid-phase welding technique, cold roll bonding (CRB) is established by the combined plastic deformation of metals to be joined [1]. This technology has been utilized to produce layered sheets and composite strips, including two-layered metal (such as Al/Al, steel/steel, Cu/Cu, Al/Cu, Al/Ti, Al/Mg, Al/Zn, Al/steel, Ti/Ni, Ag/Cu and Cu/Nb [1]), three and multilayered sandwich composite (such as Al/Al/Al [2][3][4], Al/Cu/Al [5], Cu/Cu/Cu [6], Ti-Ni/Ti-Ni/Ti-Ni [7], Al/Al/Al/Al [8] and Al/Al/Al/steel [9]), metal-matrix composite (such as Al with Ti particles [10], Al with Al 2 O 3 particles [11], Al with TiO 2 particles [12], steel with SiC [13] and Cu with carbon nanotubes [14]) and porous metal (such as aluminium foam [15]). Among these, porous metallic material possessing superior damping capacity and lightweight to fully dense one attracts the researchers' attention, and it is currently manufactured by adding TiH 2 on the bonding surface before CRB and heating the bonded sheet after CRB (shown in Figure 1(a,b)) [16].…”