9Cr马氏体耐热钢是目前热电厂关键设备制造的主选钢种,其最大的特点是600℃左右高温服役条件下良好的持久强度,较好的抗腐蚀性能.本文主要阐述了9Cr马氏体耐热钢的发展及其研究的最新进展,从材料的组织结构、蠕变特性和蠕变寿命预测等多方面叙述了有关9Cr马氏体耐热钢的研究动态.
9Cr mastensitic heat-resistant steel (for short, 9Cr M HRS), which has such excellent performances as high creep-rupture strength and good corrosion resistance under 600 ℃ service condition, is the preferred steel for the equipments for fossil-fired power plants, Special attentions are paid to the latest developed process and the in-vestigation results about the 9Cr MHRS. The research developments about the microstructure, creep mechanisms and creep life assessment of 9Cr MHRS are also reviewed.
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