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一、前言伟大领袖毛主席教导我们说:“中国人民有志气,有能力,一定要在不远的将来,赶上和超过世界先进水平”。 解放以来,尽管帝、修、反各方面卡得很紧,然而,新中国在毛主席、共产党的领导下,坚持“独立自主,自力更生”的原则和“抓革命,促生产”的方针工农业生产突飞猛进、蒸蒸日上。 随着我国航空工业的不断发展,对材料的使用要求也愈来愈高,特别对发动机材料要求更严。以前发动机中的燃烧室材料大部分使用镍含量很高的GH30、GH39、GH44等镍基耐热合金板。含镍量占60～80%,每
I. Introduction The great leader Chairman Mao teaches us that “The Chinese people are ambitious and capable and must catch up with and surpass the advanced world standards in the near future.” However, under the leadership of Chairman Mao and the Communist Party, New China adheres to the principle of “independence and self-reliance” and the principle of “grasping the revolution and promoting production” in the industrial and agricultural production By leaps and bounds, thriving. With the continuous development of China’s aviation industry, the requirements on the use of materials are also getting higher and higher, especially for engine materials. In the past, most of the engine combustion chamber materials used GH30, GH39, GH44 and other nickel-based heat-resistant alloy plates with high nickel content. Nickel content of 60 to 80%, each