Comparison of a Directionally Solidified TiAl Alloy by Φ15 mm Cylindrical and 29 × 6 mm Plate Y2O3 Molds

Hailong Zhang; Hongsheng Ding; Qiang Wang; Ruirun Chen; Jingjie Guo; Hengzhi Fu

doi:10.1007/s11837-017-2475-7

Comparison of a Directionally Solidified TiAl Alloy by Φ15 mm Cylindrical and 29 × 6 mm Plate Y₂O₃ Molds

Hailong Zhang
, Hongsheng Ding^*
, Qiang Wang
, Ruirun Chen
, Jingjie Guo
, Hengzhi Fu

^*Corresponding author for this work

Harbin Institute of Technology

Research output: Contribution to journal › Review article › peer-review

1 Scopus citations

Abstract

To begin a preliminary exploration on the effect of shape, the effect of a novel shaped 29 × 6 mm plate mold on the microstructure and mechanical properties of directionally solidified (DS) Ti-45Al-2Cr-2Nb was investigated. For comparison, Φ15 mm cylindrical molds with an equivalent cross-sectional area were used. Experimental results show that the typical microstructures of the DS region in all samples consist of regular well aligned α₂/γ lamellar structure, B2 phase and Y₂O₃ particles. Due to the lower strength of flow generated by the shape factor of the mold, the plate sample has coarser lamellae and more B2 phase, but fewer Y₂O₃ particles. Additionally, the room temperature (RT) fracture toughness and tensile properties of the plate sample are improved.

Original language	English
Pages (from-to)	1812-1817
Number of pages	6
Journal	JOM
Volume	69
Issue number	10
DOIs	https://doi.org/10.1007/s11837-017-2475-7
State	Published - 1 Oct 2017
Externally published	Yes

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title = "Comparison of a Directionally Solidified TiAl Alloy by Φ15 mm Cylindrical and 29 × 6 mm Plate Y2O3 Molds",

abstract = "To begin a preliminary exploration on the effect of shape, the effect of a novel shaped 29 × 6 mm plate mold on the microstructure and mechanical properties of directionally solidified (DS) Ti-45Al-2Cr-2Nb was investigated. For comparison, Φ15 mm cylindrical molds with an equivalent cross-sectional area were used. Experimental results show that the typical microstructures of the DS region in all samples consist of regular well aligned α2/γ lamellar structure, B2 phase and Y2O3 particles. Due to the lower strength of flow generated by the shape factor of the mold, the plate sample has coarser lamellae and more B2 phase, but fewer Y2O3 particles. Additionally, the room temperature (RT) fracture toughness and tensile properties of the plate sample are improved.",

author = "Hailong Zhang and Hongsheng Ding and Qiang Wang and Ruirun Chen and Jingjie Guo and Hengzhi Fu",

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doi = "10.1007/s11837-017-2475-7",

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TY - JOUR

T1 - Comparison of a Directionally Solidified TiAl Alloy by Φ15 mm Cylindrical and 29 × 6 mm Plate Y2O3 Molds

AU - Zhang, Hailong

AU - Ding, Hongsheng

AU - Wang, Qiang

AU - Chen, Ruirun

AU - Guo, Jingjie

AU - Fu, Hengzhi

PY - 2017/10/1

Y1 - 2017/10/1

N2 - To begin a preliminary exploration on the effect of shape, the effect of a novel shaped 29 × 6 mm plate mold on the microstructure and mechanical properties of directionally solidified (DS) Ti-45Al-2Cr-2Nb was investigated. For comparison, Φ15 mm cylindrical molds with an equivalent cross-sectional area were used. Experimental results show that the typical microstructures of the DS region in all samples consist of regular well aligned α2/γ lamellar structure, B2 phase and Y2O3 particles. Due to the lower strength of flow generated by the shape factor of the mold, the plate sample has coarser lamellae and more B2 phase, but fewer Y2O3 particles. Additionally, the room temperature (RT) fracture toughness and tensile properties of the plate sample are improved.

AB - To begin a preliminary exploration on the effect of shape, the effect of a novel shaped 29 × 6 mm plate mold on the microstructure and mechanical properties of directionally solidified (DS) Ti-45Al-2Cr-2Nb was investigated. For comparison, Φ15 mm cylindrical molds with an equivalent cross-sectional area were used. Experimental results show that the typical microstructures of the DS region in all samples consist of regular well aligned α2/γ lamellar structure, B2 phase and Y2O3 particles. Due to the lower strength of flow generated by the shape factor of the mold, the plate sample has coarser lamellae and more B2 phase, but fewer Y2O3 particles. Additionally, the room temperature (RT) fracture toughness and tensile properties of the plate sample are improved.

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DO - 10.1007/s11837-017-2475-7

M3 - 文献综述

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Comparison of a Directionally Solidified TiAl Alloy by Φ15 mm Cylindrical and 29 × 6 mm Plate Y₂O₃ Molds

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