Effect of heat treatment on microstructures and mechanical properties in a full lamellar PM TiAl alloy

Effect of heat treatment on microstructures and mechanical properties in a full lamellar PM TiAl alloy

The effect of heat treatment on the microstructures and tensile properties of a powder metallurgical (PM) TiAl based alloy has been investigated in this paper. The near gamma (NG) microstructure is transformed to a full lamellar (FL) microstructure with an average grain size of 100 μm by he...

Full description

Bibliographic Details
Main Authors: Meike Su, Zebao Lang, Lijing Zheng, Jie Yan, Kai Guan, Hu Zhang
Format: Article
Language:English
Published: Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) 2012-06-01
Series:Materials Research
Subjects:
TiAl based alloys
Heat treatment
tensile properties
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000300017
Description
Summary:The effect of heat treatment on the microstructures and tensile properties of a powder metallurgical (PM) TiAl based alloy has been investigated in this paper. The near gamma (NG) microstructure is transformed to a full lamellar (FL) microstructure with an average grain size of 100 μm by heat treatments. The lamellar spacing of FL structure decreases with the increase of cooling rate. For cooling rates of 5, 10 and 50 °C/min, the lamellar spacing is 1.9, 1.0 and 0.8 μm respectively. The room temperature tensile properties exhibit an increasing trend with decrease of lamellar spacing.
ISSN:1516-1439

Similar Items