CAJ | 학술논문

研究了一种新型定向高温合金DZ142的微观组织,测定了DZ142合金持久性能、抗氧化性能、抗热腐蚀性能并与DZ125L合金进行比较.结果表明:热处理后的DZ142合金组织主要由γ、γ'、(γ+γ')共晶和MC型碳化物组成;经长期时效处理,合金时效组织中未见有害的TCP相,碳化物类型仍为MC型.DZ142合金的持久性能,高温抗氧化性能和抗热腐蚀性能都优于DZ125L合金.
연구료일충신형정향고온합금DZ142적미관조직,측정료DZ142합금지구성능、항양화성능、항열부식성능병여DZ125L합금진행비교.결과표명:열처리후적DZ142합금조직주요유γ、γ'、(γ+γ')공정화MC형탄화물조성;경장기시효처리,합금시효조직중미견유해적TCP상,탄화물류형잉위MC형.DZ142합금적지구성능,고온항양화성능화항열부식성능도우우DZ125L합금.
A novel DS superalloy DZ142 was developed in order to maximize the longitudinal rupture strength while retaining acceptable ductility with good environmental properties.The microstructure,the creep rupture,the hot corrosion and the oxidation resistance of DZ142 alloy were studied by scanning electron microscopy,optical microscopy and X-ray diffraction.The results indicate that the microstructure of the alloy after heat treatment are composed ofγ,γ',(γ+γ')eutectic and carbides.After long term aged,DZ142 alloy exhibits good microstructure stability without deleterious TCP phases and the carbide is still of MC type.The creep rupture,the hot corrosion and the oxidation resistance of DZ142 alloy is better than those of DZ125L alloy