On the Thermodynamics and Kinetics of TCP Phase Precipitation in Re- and Ru- Containing Ni-base Superalloys

被引：37

作者：

Matuszewski, Kamil ^{[1
]}

Mueller, Alexander ^{[1
]}

Ritter, Nils ^{[1
]}

Rettig, Ralf ^{[1
]}

Kurzydlowski, Krzysztof J. ^{[2
]}

Singer, Robert F. ^{[1
]}

机构：

[1] Univ Erlangen Nurnberg, Inst Sci & Technol Met WTM, D-91058 Erlangen, Germany

[2] Warsaw Univ Technol, Fac Mat Sci & Engn, PL-02507 Warsaw, Poland

来源：

ADVANCED ENGINEERING MATERIALS | 2015年 / 17卷 / 08期

关键词：

CLOSE-PACKED PHASES; RHENIUM; STABILITY; RUTHENIUM;

D O I：

10.1002/adem.201500173

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Three experimental Ni-base superalloys of the second, third and fourth generation are studied in this work to clarify the effect of Re and Ru on the precipitation of TCP phases. Thermodynamic calculations using the CALPHAD method are performed based on the local chemical composition obtained with the use of electron probe microanalysis. The effects of microsegregation and -precipitation are taken into account. The results, complemented with scanning electron microscopy observations, show that Re increases, while Ru decreases the inclination of the material to precipitate TCP phases. The effect of both elements is assigned to thermodynamic rather than kinetic reasons. The CALPHAD-calculations do predict the effect of Re on the TCP phase formation in the investigated alloys correctly, but not the effect of Ru.

引用

页码：1127 / 1133

页数：7

共 34 条

[1] AN ATOM PROBE INVESTIGATION OF THE ROLE OF RHENIUM ADDITIONS IN IMPROVING CREEP RESISTANCE OF NI-BASE SUPERALLOYS [J].

BLAVETTE, D ;

CARON, P ;

KHAN, T .

SCRIPTA METALLURGICA, 1986, 20 (10) :1395-1400

[2] ATOM-PROBE MICROANALYSIS OF A NICKEL-BASE SUPERALLOY [J].

BLAVETTE, D ;

BOSTEL, A ;

SARRAU, JM .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1985, 16 (10) :1703-1711

[3]

Darolia R., 1988, SUPERALLOYS 1988, P255

[4]

Fu CL, 2004, SUPERALLOYS 2004, P867

[5] A STATISTICALLY SIGNIFICANT EXPERIMENTAL-TECHNIQUE FOR INVESTIGATING MICROSEGREGATION IN CAST ALLOYS [J].

GUNGOR, MN .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1989, 20 (11) :2529-2533

[6]

Harada H., 2003, P INT GAS TURB C 200, V1

[7]

Harris K., 1992, SUPERALLOY 1992, P297

[8] Reasons for the enhanced phase stability of Ru-containing nickel-based superalloys [J].

Heckl, A. ;

Neumeier, S. ;

Cenanovic, S. ;

Goeken, M. ;

Singer, R. F. .

ACTA MATERIALIA, 2011, 59 (17) :6563-6573

[9] The effect of Re and Ru on γ/γ′ microstructure, γ-solid solution strengthening and creep strength in nickel-base superalloys [J].

Heckl, A. ;

Neumeier, S. ;

Goeken, M. ;

Singer, R. F. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (09) :3435-3444

[10] Solidification Characteristics and Segregation Behavior of Nickel-Base Superalloys in Dependence on Different Rhenium and Ruthenium Contents [J].

Heckl, A. ;

Rettig, R. ;

Singer, R. F. .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2010, 41A (01) :202-211

← 1 2 3 4 →