CAJ | 학술논문

近年来，世界各国开始着力研发先进超超临界（A-USC）燃煤发电技术，A-USC锅炉设计参数显著提高，其设计温度和压力已经分别达到700℃和35 MPa，对金属材料的高温强度、抗氧化性、抗腐蚀性及焊接性能等提出较高的要求。针对世界各国相继开展的A-USC机组研究项目，本文介绍了各国重点研究的700℃等级A-USC锅炉过（再）热器及高温蒸汽管道可采用的Inconel617、Haynes230、Inconel617B、Nimonic263及Inconel740等镍基高温合金的组织结构、性能及国内外研究进展，并对上述各部件选用镍基合金提出建议，供相关材料研究人员参考。
근년래，세계각국개시착력연발선진초초림계（A-USC）연매발전기술，A-USC과로설계삼수현저제고，기설계온도화압력이경분별체도700℃화35 MPa，대금속재료적고온강도、항양화성、항부식성급한접성능등제출교고적요구。침대세계각국상계개전적A-USC궤조연구항목，본문개소료각국중점연구적700℃등급A-USC과로과（재）열기급고온증기관도가채용적Inconel617、Haynes230、Inconel617B、Nimonic263급Inconel740등얼기고온합금적조직결구、성능급국내외연구진전，병대상술각부건선용얼기합금제출건의，공상관재료연구인원삼고。
Different countries began to research advanced ultra-supercritical(A-USC) power generation technology in recent years. The design temperature and pressure of A-USC boiler had improved to 700℃ and 35 MPa. In the meantime, the high temperature strength, oxidation-resistance, corrosion-resistance and weld-ability of metal materials should be improved. To the A-USC unit research programs of main countries, the paper presented the microstructure, the mechanical properties and the researching progress of main materials which were used to fabricate superheater and main steam pipe. These Ni-based high temperature alloys contained Inconel617, Haynes230, Inconel617B, Nimonic263 and Inconel740. In the last, some suggestions were mentioned to select Ni-base alloy for researchers and users.