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本文所讲的是供制造在高于550℃下工作的喷气发动机零件用的金属材料。 工作时受热至550℃的零件,应采用合铬约12%的纯铁体+奥氏体之模锻钢及含硅或不含硅的奥氏体18—8型铬(金泉)钢制造。铬(金泉)钢于1050～1100℃在水中或空气中淬火,然后在750～800℃下时效,这样可提高其强度性能,可使其组织稳定。 在700～750℃下工作的材料,需补加合金元素。加入的合金元素有:(金泉)、铬、钛及其他元素。(金泉)可以提高耐热性能及抗腐蚀性能;铬能提高抗氧化性能,因为,铬本身在钢的表面上形
What is presented herein is a metal material for use in making jet engine components that operate above 550 ° C. Work should be heated to 550 ℃ parts, should be about 12% pure chromium alloy + austenitic forging steel and silicon or silicon-free austenitic 18-8 chromium (Kimcheong) steel manufacturing. Chromium (Kimcheon) steel in 1050 ~ 1100 ℃ in water or air quenching, and then aging at 750 ~ 800 ℃, it can improve its strength and performance, can make its organization stable. In 700 ~ 750 ℃ work under the material, need to add alloying elements. Join the alloy elements are: (Kim Chuan), chromium, titanium and other elements. (Jinquan) can improve the heat resistance and corrosion resistance; chromium can improve the oxidation resistance, because the chromium itself in the steel surface shape