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http://dx.doi.org/10.12656/jksht.2011.24.1.023

Effect of Aging Treatment on the Mechanical Properties and Damping Capacity of 12Cr Heat Resistant Steel with Ferrite Phase  

Kang, C.Y. (Dept. of Metallurgical Engineering, Pukyong National University)
Choi, H.G. (Dept. of Metallurgical Engineering, Pukyong National University)
Park, H.K. (Dept. of Metallurgical Engineering, Pukyong National University)
Sung, J.H. (Dept. of Materials Science and Engineering, Dong-A University)
Lee, D.H. (Technical Institute, Turbo-Power Tech)
Publication Information
Journal of the Korean Society for Heat Treatment / v.24, no.1, 2011 , pp. 23-30 More about this Journal
Abstract
This study was carried out to investigate the effect of aging treatment on the mechanical properties and damping capacity of 12Cr heat resistant steel with ferrite phase. While hardness values in ferrite phase was not changed, that in martensite phase was dramatically dropped in early stage of aging treatment and then gradually decreased with increase of aging time. As aging treatment was carried out, the precipitation was not detected in ferrite phase, while carbides were precipitated in martensite phase. With increasing the aging time, tensile strength eventually decreased while impact toughness increased rapidly in the early stage of aging and then gradually increased. Besides, it was confirmed that damping capacity was not changed in the early stage of aging and then gradually increased with increase of aging time.
Keywords
Ferrite; Martensite; Heat resistant steel; Damping capacity; Aging treatment;
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Times Cited By KSCI : 3  (Citation Analysis)
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