Abstract
The new metallic bulk glass joining technique which enables the joining of Zr55Cu30Ni5Al10 and Cu42Zr42Ag8Al8 bulk glassy alloys without any crystallization has been developed. The joining technique utilizes the collision-induced diffusion phenomenon between the Zr- and Cu- based molten alloy streams with high velocity generated by ejection of alloy liquid through two nozzles at different directions. The joined region has nearly the same structure, thermal stability and mechanical properties as those for the original glassy alloys. The success of joining the Zr- and Cu-based bulk glassy alloys directly joined from liquid without any intermediate process is desired as a new type of engineering materials.
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