关键词：钢铁；钎焊；微观结构；低碳钢；金属结合；热传递
摘 要：This investigation is part of the development of several braze joints crucial for the heat exchanger transfer path from a hot-side heat exchanger to a Stirling engine heat acceptor.This paper addressed the long-term microstructural stability of various braze alloys used to join 316L stainless steel heater head to the high conductivity oxygen-free copper acceptor toensure the endurance of the critical metallic components of this sophisticated heat exchanger.