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一、前言 定向凝固DZ22镍基高温合金是为我国先进的航空燃气涡轮发动机研制的叶片材料,作涡轮工作叶片可用于950~1000℃,作导向叶片可用于1000~1050℃,其化学成分与美国的PWA1422(即DS Mar-M200+Hf)合金基本相同。
I. Introduction Directional solidification DZ22 nickel-based superalloy is developed for our advanced aviation gas turbine engine blade material for turbine blades can be used for 950 ~ 1000 ℃, for the guide blade can be used for 1000 ~ 1050 ℃, the chemical composition and the United States PWA1422 (ie DS Mar-M200 + Hf) alloy is basically the same.