Effect of growth rate on microstructure parameters and microhardness in directionally solidified Ti-49Al alloy

Jianglei Fan; Xinzhong Li; Yanqing Su; Jingjie Guo; Hengzhi Fu

doi:10.1016/j.matdes.2011.05.007

Effect of growth rate on microstructure parameters and microhardness in directionally solidified Ti-49Al alloy

Jianglei Fan^*
, Xinzhong Li
, Yanqing Su
, Jingjie Guo
, Hengzhi Fu

^*Corresponding author for this work

Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

41 Scopus citations

Abstract

Intermetallics Ti-49Al (at.%) alloy was directionally solidified with different growth rates (V=5μm/s-30μm/s) at a constant temperature gradient (G=12.1K/mm) by using a Bridgman type directional solidification furnace. The primary dendritic spacing (λ), interlamellar spacing (λ_L), and microhardness (HV) were measured. Effect of V on HV, λ and λ_L was experimental investigated. The dependencies of λ, λ_L and HV on the growth rate were determined by using linear regressing analysis. According to the result, the values of λ and λ_L decrease with the increasing of V, and the values of HV increase with the increasing of V and with the decreasing of λ and λ_L. The results were compared with previous similar experimental results for TiAl-based alloys.

Original language	English
Pages (from-to)	552-558
Number of pages	7
Journal	Materials and Design
Volume	34
DOIs	https://doi.org/10.1016/j.matdes.2011.05.007
State	Published - Feb 2012
Externally published	Yes

Keywords

A. Intermetallics
C. Casting
E. Microhardness

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10.1016/j.matdes.2011.05.007

Cite this

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title = "Effect of growth rate on microstructure parameters and microhardness in directionally solidified Ti-49Al alloy",

abstract = "Intermetallics Ti-49Al (at.\%) alloy was directionally solidified with different growth rates (V=5μm/s-30μm/s) at a constant temperature gradient (G=12.1K/mm) by using a Bridgman type directional solidification furnace. The primary dendritic spacing (λ), interlamellar spacing (λL), and microhardness (HV) were measured. Effect of V on HV, λ and λL was experimental investigated. The dependencies of λ, λL and HV on the growth rate were determined by using linear regressing analysis. According to the result, the values of λ and λL decrease with the increasing of V, and the values of HV increase with the increasing of V and with the decreasing of λ and λL. The results were compared with previous similar experimental results for TiAl-based alloys.",

keywords = "A. Intermetallics, C. Casting, E. Microhardness",

author = "Jianglei Fan and Xinzhong Li and Yanqing Su and Jingjie Guo and Hengzhi Fu",

year = "2012",

month = feb,

doi = "10.1016/j.matdes.2011.05.007",

language = "英语",

volume = "34",

pages = "552--558",

journal = "Materials and Design",

issn = "0264-1275",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Effect of growth rate on microstructure parameters and microhardness in directionally solidified Ti-49Al alloy

AU - Fan, Jianglei

AU - Li, Xinzhong

AU - Su, Yanqing

AU - Guo, Jingjie

AU - Fu, Hengzhi

PY - 2012/2

Y1 - 2012/2

N2 - Intermetallics Ti-49Al (at.%) alloy was directionally solidified with different growth rates (V=5μm/s-30μm/s) at a constant temperature gradient (G=12.1K/mm) by using a Bridgman type directional solidification furnace. The primary dendritic spacing (λ), interlamellar spacing (λL), and microhardness (HV) were measured. Effect of V on HV, λ and λL was experimental investigated. The dependencies of λ, λL and HV on the growth rate were determined by using linear regressing analysis. According to the result, the values of λ and λL decrease with the increasing of V, and the values of HV increase with the increasing of V and with the decreasing of λ and λL. The results were compared with previous similar experimental results for TiAl-based alloys.

AB - Intermetallics Ti-49Al (at.%) alloy was directionally solidified with different growth rates (V=5μm/s-30μm/s) at a constant temperature gradient (G=12.1K/mm) by using a Bridgman type directional solidification furnace. The primary dendritic spacing (λ), interlamellar spacing (λL), and microhardness (HV) were measured. Effect of V on HV, λ and λL was experimental investigated. The dependencies of λ, λL and HV on the growth rate were determined by using linear regressing analysis. According to the result, the values of λ and λL decrease with the increasing of V, and the values of HV increase with the increasing of V and with the decreasing of λ and λL. The results were compared with previous similar experimental results for TiAl-based alloys.

KW - A. Intermetallics

KW - C. Casting

KW - E. Microhardness

UR - https://www.scopus.com/pages/publications/81855207821

U2 - 10.1016/j.matdes.2011.05.007

DO - 10.1016/j.matdes.2011.05.007

M3 - 文章

AN - SCOPUS:81855207821

SN - 0264-1275

VL - 34

SP - 552

EP - 558

JO - Materials and Design

JF - Materials and Design

ER -

Effect of growth rate on microstructure parameters and microhardness in directionally solidified Ti-49Al alloy

Abstract

Keywords

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