PROCESSING, MICROSTRUCTURE AND MECHANICAL PROPERTIES OF LARGE DIRECTIONALLY SOLIDIFIED CASTINGS FOR INDUSTRIAL GAS TURBINE APPLICATIONS

ZHANG Jian; SHEN Jian; LV Yu-Zhang; LOU Lang-Hong

doi:10.3724/SP.J.1037.2010.00509

2010 , Vol. 46 >Issue 11: 1322 - 1326

DOI: https://doi.org/10.3724/SP.J.1037.2010.00509

论文

PROCESSING, MICROSTRUCTURE AND MECHANICAL PROPERTIES OF LARGE DIRECTIONALLY SOLIDIFIED CASTINGS FOR INDUSTRIAL GAS TURBINE APPLICATIONS

ZHANG Jian ,
SHEN Jian ,
LV Yu-Zhang ,
LOU Lang-Hong

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Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016

Received date: 2010-09-27

Revised date: 2010-10-15

Online published: 2010-11-11

Supported by

Supported by National Natural Science Foundation of China (No.{\footnotesize\it 50931004}), National Basic Research Program of China (No. 2010CB631201) and National High Technology Research and Development Program of China (No.2008AA05A302)

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Abstract

Contamination of low melting point metal and distortion and fracture of ceramic shell during directional solidification assisted by liquid metal cooling (LMC) were discussed. Large DS castings with 430 mm in length were produced by optimizing the processing parameters. The microstructure, heat treatment response and typical creep rupture properties of the large casting were analyzed. Results of the preliminary casting trials of large blades were also reported.

Key words： superalloy; directional solidification; liquid metal cooling; blade

Cite this article

ZHANG Jian , SHEN Jian , LV Yu-Zhang , LOU Lang-Hong . PROCESSING, MICROSTRUCTURE AND MECHANICAL PROPERTIES OF LARGE DIRECTIONALLY SOLIDIFIED CASTINGS FOR INDUSTRIAL GAS TURBINE APPLICATIONS[J]. Acta Metall Sin, 2010 , 46(11) : 1322 -1326 . DOI: 10.3724/SP.J.1037.2010.00509

References

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