Effect of heat treatment and long-term age on microstructure of a Ni3Al-based single crystal superalloy

被引：6

作者：

Ai, C. ^{[1
]}

Ou, M. Q. ^{[1
]}

Zhao, X. B. ^{[2
]}

Pei, Y. L. ^{[1
]}

Zhang, H. ^{[1
]}

Liu, L. ^{[1
]}

Li, S. S. ^{[1
]}

Gong, S. K. ^{[1
]}

机构：

[1] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

[2] Xian Thermal Power Res Inst Co Ltd, Xian 710032, Peoples R China

来源：

MATERIALS RESEARCH INNOVATIONS | 2015年 / 19卷

基金：

中国博士后科学基金;

关键词：

Ni3Al-based single crystal superalloy; Solution treatment; Age treatment; Long-term age; NI-BASE SUPERALLOY; CREEP STRENGTH; COARSENING KINETICS; 3RD-GENERATION; IMPROVEMENT;

D O I：

10.1179/1432891715Z.0000000001547

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new Re-containing Ni3Al-based single crystal superalloy was recently developed by our group. In order to obtain uniform microstructure and further improve mechanical properties of superalloy, the heat treatment regime (i.e. solution treatment and age treatment) was investigated by experimental analysis and dynamics calculation (by JMatPro), and the optimal heat treatment regime was 1335-1355 degrees C/16 h, air cooling (AC)+ 1140 degrees C/2 h, AC+870 degrees C/32 h, AC. Meanwhile, completely heat-treated experimental alloy was long-term aged at 1150 degrees C for 25-1000 h, which showed very good microstructural stability and the coarsening behaviour of gamma' phases agreed well with the typical Lifshitz-Slyozov-Wagner (LSW) theory.

引用

页码：S209 / S213

页数：5

共 25 条

[1] The effect of long-term thermal exposures on the microstructure and properties of CMSX-10 single crystal Ni-base superalloys [J].

Acharya, A ;

Fuchs, GE .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 381 (1-2) :143-153

[2]

Ai C., 2014, MAT RES RES INNOV S4, V18, pS309

[3] Trans-interface diffusion-controlled coarsening [J].

Ardell, AJ ;

Ozolins, V .

NATURE MATERIALS, 2005, 4 (04) :309-316

[4]

Argence D, 2000, SUPERALLOYS 2000, P829

[5] Review Progress in Ostwald ripening theories and their applications to nickel-base superalloys - Part I: Ostwald ripening theories [J].

Baldan, A .

JOURNAL OF MATERIALS SCIENCE, 2002, 37 (11) :2171-2202

[6]

Caron P, 2000, SUPERALLOYS 2000, P737

[7] IMPROVEMENT OF CREEP STRENGTH IN A NICKEL-BASE SINGLE-CRYSTAL SUPER-ALLOY BY HEAT-TREATMENT [J].

CARON, P ;

KHAN, T .

MATERIALS SCIENCE AND ENGINEERING, 1983, 61 (02) :173-184

[8] Heat Treatment of a Ni3Al-based Single Crystal Alloy IC32 [J].

Cui, Dongliang ;

Xie, Xiaoying ;

Li, Shusuo ;

Zhang, Heng ;

Gong, Shengkai .

HIGH PERFORMANCE STRUCTURE MATERIALS, 2013, 747-748 :665-671

[9]

Erickson GL, 1996, SUPERALLOYS 1996, P35

[10] Improvement of creep strength of a third generation, single-crystal Ni-base superalloy by solution heat treatment [J].

Fuchs G.E. .

Journal of Materials Engineering and Performance, 2002, 11 (01) :19-25

← 1 2 3 →