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Journal Article 7

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2022 1

2019 2

2018 1

2015 1

2011 1

2005 1

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Additive manufacturing 1

Bridgman process 1

CT specimen 1

Data science 1

GH4169 superalloy 1

In situ laser heat treatment 1

Inconel 718 alloy 1

Laser repair 1

Laves phase 1

Microhardness 1

Microstructure 1

Multiphysics modeling 1

Ni-based superalloy 1

Self-organizing map 1

boron 1

crack growth rate 1

creep-fatigue 1

crystallographic orientation 1

directional solidification 1

dwell time 1

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LCF behavior and life prediction method of a single crystal nickel-based superalloy at high temperature

Zhihua ZHANG,Huichen YU,Chengli DONG

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 4,   Pages 418-423 doi: 10.1007/s11465-015-0362-x

Abstract:

Low cycle fatigue tests were conducted on the single crystal nickel-based superalloy, DD6, with different

Keywords： life prediction     single crystal superalloy     low cycle fatigue (LCF)     crystallographic orientation     strain    

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Novel casting processes for single-crystal turbine blades of superalloys

Dexin MA

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 3-16 doi: 10.1007/s11465-018-0475-0

Abstract: the establishment of a high temperature gradient for SC growth and the freckle-free solidification of superalloy

Keywords： superalloy     investment casting     Bridgman process     directional solidification     single crystal     turbine blade    

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Creep-fatigue crack growth behavior in GH4169 superalloy

Dianyin HU, Xiyuan WANG, Jianxing MAO, Rongqiao WANG

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3,   Pages 369-376 doi: 10.1007/s11465-018-0489-7

Abstract: This study aims to examine the crack growth behavior of turbine disc GH4169 superalloy under creep-fatigueThe crack growth rate of GH4169 superalloy significantly increased with dwell time.

Keywords： crack growth rate     creep-fatigue     GH4169 superalloy     CT specimen     dwell time    

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A New Method for Strengthening Wrought Superalloys: micro-alloying with Phosphorus and Boron

Hu Zhuangqi,Sun Wenru,Song Hongwei

Strategic Study of CAE 2005, Volume 7, Issue 3,   Pages 17-26

Abstract:

The strengthening effect of phosphorus and boron on wrought superalloys is reviewed and discussed. The addition of phosphorus and boron can prolong the rupture life of some wrought superalloys over 3 times, and lowers the constant creep rate by an order of magnitude. By micro-alloying with phosphorus and boron, alloys with extended rupture life are developed, the service temperature of IN718 alloy is enhanced, and the alloys which can be used for a long time at 700℃ with higher combined properties can be developed.

Keywords： wrought superalloy     phosphorus     boron     micro-alloying    

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Original position statistic distribution analysis characterization of niobium on the vertical section of casting of superalloypneumatic plate wheel

Wang Haizhou,Li Meiling,Zhuang Jingyun

Strategic Study of CAE 2011, Volume 13, Issue 10,   Pages 19-27

Abstract: style="text-align: justify;">The distribution of niobium on the vertical section of casting of GH169 superalloythe homogeneity and statistic fitting degree of niobium in the vertical section of casting of GH169 superalloy

Keywords： original position statistic distribution analysis     superalloy pneumatic plate wheel     niobium     statistic    

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Introduction of a New Method for Regulating Laves Phases in Inconel 718 Superalloy during a Laser-Repairing Article

Shang Sui,Haosheng Li,Zuo Li,Xuan Zhao,Liang Ma,Jing Chen

Engineering 2022, Volume 16, Issue 9,   Pages 239-246 doi: 10.1016/j.eng.2021.08.030

Abstract: phases have important influences on the mechanical properties of laser-repaired Inconel 718 (IN718) superalloyto the deterioration of the substrate zone, the Laves phase in the laser cladding zone of IN718 superalloyproposed to regulate the morphology and size of the Laves phase in the laser cladding zone of IN718 superalloy

Keywords： Laser repair     In situ laser heat treatment     Inconel 718 alloy     Laves phase    

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Data-Driven Microstructure and Microhardness Design in Additive Manufacturing Using a Self-Organizing Map Article

Zhengtao Gan, Hengyang Li, Sarah J. Wolff, Jennifer L. Bennett, Gregory Hyatt, Gregory J. Wagner, Jian Cao, Wing Kam Liu

Engineering 2019, Volume 5, Issue 4,   Pages 730-735 doi: 10.1016/j.eng.2019.03.014

Abstract:

To design microstructure and microhardness in the additive manufacturing (AM) of nickel (Ni)-based superalloys, the present work develops a novel data-driven approach that combines physics-based models, experimental measurements, and a data-mining method. The simulation is based on a computational thermal-fluid dynamics (CtFD) model, which can obtain thermal behavior, solidification parameters such as cooling rate, and the dilution of solidified clad. Based on the computed thermal information, dendrite arm spacing and microhardness are estimated using well-tested mechanistic models. Experimental microstructure and microhardness are determined and compared with the simulated values for validation. To visualize process–structure–properties (PSP) linkages, the simulation and experimental datasets are input to a data-mining model—a self-organizing map (SOM). The design windows of the process parameters under multiple objectives can be obtained from the visualized maps. The proposed approaches can be utilized in AM and other data-intensive processes. Data-driven linkages between process, structure, and properties have the potential to benefit online process monitoring control in order to derive an ideal microstructure and mechanical properties.

Keywords： Data science     Multiphysics modeling     Self-organizing map     Microstructure     Microhardness     Ni-based superalloy    

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Title Author Date Type Operation

LCF behavior and life prediction method of a single crystal nickel-based superalloy at high temperature

Zhihua ZHANG,Huichen YU,Chengli DONG

Journal Article

Novel casting processes for single-crystal turbine blades of superalloys

Dexin MA

Journal Article

Creep-fatigue crack growth behavior in GH4169 superalloy

Dianyin HU, Xiyuan WANG, Jianxing MAO, Rongqiao WANG

Journal Article

A New Method for Strengthening Wrought Superalloys: micro-alloying with Phosphorus and Boron

Hu Zhuangqi,Sun Wenru,Song Hongwei

Journal Article

Original position statistic distribution analysis characterization of niobium on the vertical section of casting of superalloypneumatic plate wheel

Wang Haizhou,Li Meiling,Zhuang Jingyun

Journal Article

Introduction of a New Method for Regulating Laves Phases in Inconel 718 Superalloy during a Laser-Repairing

Shang Sui,Haosheng Li,Zuo Li,Xuan Zhao,Liang Ma,Jing Chen

Journal Article

Data-Driven Microstructure and Microhardness Design in Additive Manufacturing Using a Self-Organizing Map

Zhengtao Gan, Hengyang Li, Sarah J. Wolff, Jennifer L. Bennett, Gregory Hyatt, Gregory J. Wagner, Jian Cao, Wing Kam Liu

Journal Article