Hot deformation behavior and new grain size model of hot extruded FGH4096 superalloy during hot compression

被引：32

作者：

Liu, Wei ^{[1
]}

Liu, Zhiling ^{[1
]}

Zhang, Hua ^{[1
]}

Ruan, Jingjing ^{[1
]}

Huang, Hailiang ^{[1
]}

Zhou, Xin ^{[1
]}

Meng, Fanchao ^{[1
]}

Zhang, Shangzhou ^{[1
]}

Jiang, Liang ^{[1
]}

机构：

[1] Yantai Univ, Inst Adv Studies Precis Mat, Yantai 264005, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2023年 / 938卷

基金：

中国国家自然科学基金;

关键词：

Hot extruded; FGH4096; Hot working map; DRX; Grain size model; POWDER-METALLURGY SUPERALLOY; NICKEL-BASED SUPERALLOY; DYNAMIC RECRYSTALLIZATION; PROCESSING MAPS; STRAIN-RATE; MICROSTRUCTURE EVOLUTION; FLOW-STRESS; MG ALLOY; TEMPERATURE; FGH96;

D O I：

10.1016/j.jallcom.2022.168574

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The deformation behavior and grain size models of hot extruded (HEXed) FGH4096 superalloy at the temperature of 1040-1130 degrees C and the strain rate of 0.001-1 s-1 were investigated by hot compression. On the basis of the corrected flow stress curves, the constitutive equation considering the strain variable and hot working maps were established. The dynamic recrystallization (DRX) behaviors and microstructure evolution in different regions in hot working map superimposing the hot working instability maps were also analyzed. Discontinuous dynamic recrystallization (DDRX) occurs simultaneously with continuous dynamic recrystallization (CDRX) in the HEXed FGH4096 superalloy at low temperature, while only DDRX is activated at high deformation temperature. The wedge cracks, voids, and intergranular cracks are the main causes of flow instability. An optimal hot working window of deformation temperature = 1102-1130 degrees C and strain rate = 10-1.26-10-0 s-1 was obtained by combining the hot working maps and microstructure evo-lution. An established new grain size model by extending the Z parameter can predict the average grain size more accurately.(c) 2022 Elsevier B.V. All rights reserved.

引用

页数：17

共 52 条

[1] Orientation gradients and geometrically necessary dislocations in ultrafine grained dual-phase steels studied by 2D and 3D EBSD [J].

Calcagnotto, Marion ;

Ponge, Dirk ;

Demir, Eralp ;

Raabe, Dierk .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (10-11) :2738-2746

[2] Modelling of constitutive relationship, dynamic recrystallization and grain size of 40Cr steel during hot deformation process [J].

Chen, Liang ;

Sun, Weiyan ;

Lin, Jun ;

Zhao, Guoqun ;

Wang, Guangchun .

RESULTS IN PHYSICS, 2019, 12 :784-792

[3] Study on Hot Deformation Behavior and Processing Maps of Cu-0.35Cr-0.15Zr Alloy [J].

Dai, Jiao-yan ;

Mu, Si-guo ;

Wang, Yong-ru .

MANUFACTURING PROCESS TECHNOLOGY, PTS 1-5, 2011, 189-193 :1456-1464

[4] THE DEPENDENCE OF GRAIN-SIZE ON STRESS DURING DYNAMIC RECRYSTALLIZATION [J].

DERBY, B .

ACTA METALLURGICA ET MATERIALIA, 1991, 39 (05) :955-962

[5] Hot deformation behavior and flow stress modeling of a Ni-based superalloy [J].

Detrois, Martin ;

Antonov, Stoichko ;

Tin, Sammy ;

Jablonski, Paul D. ;

Hawk, Jeffrey A. .

MATERIALS CHARACTERIZATION, 2019, 157

[6] THE THERMAL AND METALLURGICAL STATE OF STEEL STRIP DURING HOT-ROLLING .2. FACTORS INFLUENCING ROLLING LOADS [J].

DEVADAS, C ;

BARAGAR, D ;

RUDDLE, G ;

SAMARASEKERA, IV ;

HAWBOLT, EB .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1991, 22 (02) :321-333

[7] Dynamic recrystallization mechanisms operating in a Ni-20%Cr alloy under hot-to-warm working [J].

Dudova, N. ;

Belyakov, A. ;

Sakai, T. ;

Kaibyshev, R. .

ACTA MATERIALIA, 2010, 58 (10) :3624-3632

[8] A new method for evaluation of friction in bulk metal forming [J].

Ebrahimi, R ;

Najafizadeh, A .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2004, 152 (02) :136-143

[9] Study on the thermal deformation behavior and microstructure of FGH96 heat extrusion alloy during two-pass hot deformation [J].

Fang, Bin ;

Tian, Gao-feng ;

Ji, Zhen ;

Wang, Meng-ya ;

Jia, Cheng-chang ;

Yang, Shan-wu .

INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS, 2019, 26 (05) :657-663

[10]

Fang S., 2020, J PHYS C SER, V1637

← 1 2 3 4 5 6 →