文章信息/Info

Title:

Research Progress on the Service Environmental Performance of Nickel-Based Single Crystal Superalloys

文章編號:

1674-3962(2024)10-0891-11

作者:

劉靜;  王莉;  于明涵;  閔師領; 李佳聲;  董加勝;  樓瑯洪

1. 中國科學院金屬研究所 師昌緒先進材料創新中心，遼寧 沈陽 110016 2. 中國科學技術大學材料科學與工程學院，安徽 合肥 230026

Author(s):

LIU Jing; WANG Li; YU Minghan; MIN Shiling; LI Jiasheng; DONG Jiasheng; LOU Langhong

1.Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China 2.School of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China

關鍵詞:

鎳基單晶高溫合金; 薄壁; 二次取向; 氣膜孔; 涂層

Keywords:

nickel-based single crystal superalloy;  thin wall;  secondary dendrite orientation;  film hole;  coating

分類號:

TG132.3

DOI:

10.7502/j.issn.1674-3962.202409025

文獻標志碼:

A

摘要:

航空發動機與燃氣輪機作為國之重器，對保障國防安全和能源安全具有重要意義。隨著發動機效率的不斷提升，渦輪進氣口溫度不斷提高。先進葉片往往采用高代次單晶高溫合金材料制備，具有薄壁、多孔復雜冷卻結構，且表面涂覆先進涂層，因而先進單晶葉片結構越來越精細復雜，服役過程中葉片不同部位溫度場、應力場分布變化更大，其損傷機制無法通過傳統棒狀試樣的變形損傷機制完全體現。基于先進單晶葉片的結構特點及服役環境特點，綜述了葉片結構（薄壁、氣膜孔）、二次枝晶取向（二次取向）及先進涂層等單一因素及多因素耦合作用對單晶合金拉伸、蠕變及疲勞等典型性能的影響規律及損傷機理研究，并對鎳基單晶高溫合金近服役環境性能研究的發展方向進行展望。

Abstract:

Aero-engines and gas turbines are of great significance for ensuring national defense security and national energy security. With the improvement of engine efficiency, the turbine inlet temperature increases continuously. High�瞘eneration single crystal superalloys have been used for manufacturing of advanced blades. The blades always possess complex cooling structures with thin wall and cooling holes, and usually possess advanced coatings. Therefore, the temperature gradient and stress gradient in the different parts of the blades would be higher. The damage mechanisms of the traditional rod samples may not fully represent the failure of the blades. Based on the complex structure and severe service environment, the effects of single factor or coupled factors, such as structure (thin-wall, film cooling holes), secondary dendrite orientation (secondary orientation), and advanced coatings on the typical properties of single crystal superalloys were reviewed in the present paper. Further, the invastigation directions of the performance of nickel-based single crystal superalloys in the typical service environments were prospected.