http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
구양모,이성학,추동훈,최성무 대한금속재료학회(대한금속학회) 1998 대한금속·재료학회지 Vol.36 No.2
Thermal analyses of the surface layer of a gray cast iron irradiated with high-energy electron beam have been studied. In order to investigate the complex microstructures which were composed of plate martensite, retained austenite, ledeburite, and flake graphite, the thermal analysis using a heat-transfer model and the simulation test including thermal cycles of abrupt heating and quenching were carried out. The results indicated that the irradiated surface was heated up to the austenite temperature region and then quenched to room temperature, which was enough to obtain surface hardening through martensitic transformation. When the surface temperature reached the melting temperature, the ledeburite eutectic structure was formed. The thermal analysis data matched well with the microstructures of the thermally simulated specimens, confirming that the thermal analysis is quite useful for the microstructural analysis of the surface layers irradiated with high-energy electron beam.