Precipitate Transformation of T91 Steel during Aging at 650 ℃

WANG Zhi-wu; SONG Tao; DOU Hong

Materials and Mechanical Engineering > 2012 > 36(8): 30-33.

WANG Zhi-wu, SONG Tao, DOU Hong. Precipitate Transformation of T91 Steel during Aging at 650 ℃[J]. Materials and Mechanical Engineering, 2012, 36(8): 30-33.

Citation:

WANG Zhi-wu, SONG Tao, DOU Hong. Precipitate Transformation of T91 Steel during Aging at 650 ℃[J]. Materials and Mechanical Engineering, 2012, 36(8): 30-33.

Citation:

WANG Zhi-wu, SONG Tao, DOU Hong. Precipitate Transformation of T91 Steel during Aging at 650 ℃[J]. Materials and Mechanical Engineering, 2012, 36(8): 30-33.

PDF (1438 KB)

Precipitate Transformation of T91 Steel during Aging at 650 ℃

More Information

Received Date: April 21, 2012

Graphical Abstract

Abstract

Abstract

The original specimen of T91 and specimens aged for 50-1 700 h at 650 ℃ were studied by scanning electron microscopy (SEM) and energy dispersive spectrometer(EDS), and their precipitated phases were analyzed as a key point. Results show that the phases precipitated along grain-boundary were composed of Cr and Mo mainly; the account of precipitated phase firstly decreased, then increased, and decreased again; the average size of precipitated phase firstly increased, then decreased and spheroidized finally; the relationship between area fraction of precipitated phase and aging time fitted well with a quadratic function.
- T91 steel,
- aging,
- microstructure,
- precipitated phase

FullText(HTML)

References (10)

References

[1]	ERIN M, HANEY, FRANCE D, et al. Macroscopic results of long-term creep on a modified 9Cr–1Mo steel (T91) [J].Materials Science and Engineering A, 2009, 510/511: 99-103.
[2]	王卫泽, 王钥, 朱月梅, 等.我国P91/T91钢生产及其性能的现状与进展[J]. 机械工程材料, 2010, 34(6):6-9.
[3]	苏拥军, 林高用, 范振远, 等.T91高压锅炉管的工艺研究[J]. 技术与研究, 2009(4): 64-67.
[4]	LIU C, ZHANG D, LIU Y, et al. Investigation on the precipitation behavior of M3C phase in T91 ferritic steels [J]. Nuclear Engineering and Design, 2011, 241:2411-2415.
[5]	GUTERREZ N Z, CICCO H D, MARRERO J, et al. Evolution of precipitated phases during prolonged tempering in a 9%Cr1%MoVNb ferritic-martensitic steel: Influence on creep performance [J].Materials Science and Engineering A, 2011, 528: 4019-4029.
[6]	THELNING K E. Steel and Its Heat Treatment[M].London: Butterworths, 1984: 288-300.
[7]	蔡玉林, 郑运荣. 高温合金的金相研究[M].北京: 国防工业出版社, 1986: 143-146.
[8]	史志刚, 侯安柱, 李益民.T91钢运行过程中力学性能和微观组织的变化[J].动力工程, 2005, 25(5): 742-746.
[9]	TANEIKE M, ABE F, SAWADA K. Creep-strengthening of steel at high temperatures using nano-sized carbonitride dispersions [J].Nature, 2003, 424: 294-296.
[10]	LEONA K, JOHN H, MARCLE A J, et al. Quantification of Laves phase particle size in 9CrW steel [J].Materials Characterization, 2001, 47: 111-117.

Cited By

Get Citation

PDF

XML

Article views (5) PDF downloads (2)

Turn off MathJax

Article Contents

Abstract

References

Precipitate Transformation of T91 Steel during Aging at 650 ℃

Abstract

References

Catalog

Export File

Citation

Format

Content