Inertial Weldment of Rhenium and Inconel 718

Cavender, D P ; Courtright, Z S ; Hostetter, G ; Laiman, M

关键词: INERTIA;    WELDING;    RHENIUM;    INCONEL (TRADEMARK);    AEROSPACE SYSTEMS;    WELDED JOINTS;    HEAT AFFECTED ZONE;    HARDNESS;    NONDESTRUCTIVE TESTS;    TENSILE STRENGTH;    STRAIN HARDENING;    CONDUCTIVE HEAT TRANSFER;   

RP-ID  :  NASA/TP-2018-219851,M-1454

学科分类：金属与冶金

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来源: NASA Technical Reports Server

【 摘 要 】

Inertia welding has been found to be a successful method for joining pure rhenium to Inconel 718, and with additional experimentation, this process may have great potential for rocket nozzle applications. Refractory metals are ideally suited to this application, where high temperatures and oxidizing environment survivability is required, but not all of the thruster must be made of these materials, only the areas that require them. A bolted joint between the two metals is not ideal, especially for small thrusters where the mess of a bolted join will come at a steep price. A welded joint would be preferred for flight thrusters.