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(lǐng); 李佳聲;  董加勝;  樓瑯洪

1. 中國科學(xué)院金屬研究所 師昌緒先進(jìn)材料創(chuàng)新中心，遼寧 沈陽 110016 2. 中國科學(xué)技術(shù)大學(xué)材料科學(xué)與工程學(xué)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(guān)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(xiàn)標(biāo)志碼:

A

摘要:

航空發(fā)動機(jī)與燃?xì)廨啓C(jī)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(fā)動機(jī)效率的不斷提升，渦輪進(jìn)氣口溫度不斷提高。先進(jìn)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(fù)雜冷卻結(jié)構(gòu)，且表面涂覆先進(jìn)涂層，因而先進(jìn)單晶葉片結(jié)構(gòu)越來越精細(xì)復(fù)雜，服役過程中葉片不同部位溫度場、應(yīng)力場分布變化更大，其損傷機(jī)制無法通過傳統(tǒng)棒狀試樣的變形損傷機(jī)制完全體現(xiàn)�；�于先進(jìn)單晶葉片的結(jié)構(gòu)特點(diǎn)及服役環(huán)境特點(diǎn)，綜述了葉片結(jié)構(gòu)（薄壁、氣膜孔）、二次枝晶取向（二次取向）及先進(jìn)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(guī)律及損傷機(jī)理研究，并對鎳基單晶高溫合金近服役環(huán)境性能研究的發(fā)展方向進(jìn)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.