1 前言 能源材料的研究和开发对大型火电的节能、降耗,大幅度降低发电成本和安全运行与提高发电效率,特别是对机组的延寿及环境保护具有举足轻重的作用,一直受到世界各国的重视。 我国电力工业发展的方针是火电、水电并举,并适当发展核电。“九五”期间火电仍是我国电力工业发展的重点。今后几年国家新增装机容量将以2000万kW左右的速度增长,其中80％由火电机组提供,叶片钢和螺栓钢是火电 1 Preface The research and development of energy materials have always been valued by all the countries in the world for their energy saving, consumption reduction, substantial reduction of power generation cost, safe operation and improvement of power generation efficiency, especially for unit life extension and environmental protection . China’s power industry development guidelines are thermal power, hydropower simultaneously, and the appropriate development of nuclear power. During the Ninth Five-Year Plan period, thermal power is still the key point in the development of China’s power industry. In the next few years, the newly increased installed capacity of the country will grow at a rate of about 20 million kW, of which 80% will be provided by thermal power units. The blade steel and bolt steel are thermal power