δ-phase characterization of superalloy Allvac 718 Plus™

被引：0

作者：

Sommitsch, Christof ^{[1
]}

Stotter, Christoph ^{[1
]}

Leitner, Harald ^{[2
]}

Mitsche, Stefan ^{[3
]}

Letofsky-Papse, Ilse ^{[3
]}

Stockinger, Martin ^{[4
]}

机构：

[1] Univ Leoben, Chair Metal Forming, Leoben 8700, Austria

[2] Univ Leoben, Christian Doppler Lab Early Stages Precipitat, Leoben 8700, Austria

[3] Graz Univ, Inst Elect Microscopy, A-8010 Graz, Austria

[4] Bohler Schmiedetech GmbH & Co KG, A-8650 Kapfenberg, Austria

来源：

TMS 2008 ANNUAL MEETING SUPPLEMENTAL PROCEEDINGS, VOL 2: MATERIALS CHARACTERIZATION, COMPUTATION AND MODELING | 2008年

关键词：

nickel-base superalloy; Allvac 718Plus (TM); dclta-phase;

D O I：

暂无

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Nowadays, the trend goes to better and more efficient gas turbine engines with low emission, great durability and low cycle cost. Therefore, a new grade, Allvac 718 Plus (TM), shall enhance the high temperature properties. The appearance, morphology and control of delta-phase are of special interest because of their critical influence on grain structure, grain size and mechanical properties. In this work, the evolution of the delta-phase during a heat treatment between 900 and 1000 degrees C for annealing times of up to 8 hours is investigated in order to determine the time temperature precipitation (TTP) diagram and to understand the phase morphology. For this, different analysis methods are applied, such as light microscopy analysis with computer-aided quantitative metallography, differential scanning calorimetry (DSC) and both scanning electron (SEM) and transmission electron microscopy (TEM).

引用

页码：63 / +

页数：2

共 7 条

[1]

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[2]

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[3]

Cone FP, 2001, SUPERALLOYS 718, 625, 706 AND VARIOUS DERIVATIVES, P323

[4]

Jeniski RA, 2006, ADV MATER PROCESS, V164, P19

[5]

Paulonis DF, 2001, SUPERALLOYS 718, 625, 706 AND VARIOUS DERIVATIVES, P13

[6]

STOTTER C, UNPUB INT J MAT RES

[7]

Xie XS, 2005, Superalloys 718, 625, 706 and Derivatives, Proceedings, P179

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