Precipitation Hardening of Titanium Carbides in Ti Micro-Alloyed Ultra-High Strength Steel

Abstract:

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New 700MPa hot rolled ultra-high strength steels were successfully developed by using Ti micro-alloying technology in CSP line. Experimental methods, such as OM, TEM and chemical phase analysis, were used to study the experimental steel. The microstructure is composed of quasi-polygonal ferrite grains, whose average grain size is about 4μm. Large number of nanometer TiC particles distribute along dislocations. The mass fraction of MX phase is 0.0793wt%, in which the particles smaller than 10nm account for 33.7%. The contribution of precipitation hardening resulting from nanometer particles is calculated as approximate 158MPa.

Info:

Periodical:

Advanced Materials Research (Volumes 284-286)

Main Theme:

Edited by:

Xiaoming Sang, Pengcheng Wang, Liqun Ai, Yungang Li and Jinglong Bu

Pages:

1275-1278

DOI:

10.4028/www.scientific.net/AMR.284-286.1275

Citation:

X. D. Huo et al., "Precipitation Hardening of Titanium Carbides in Ti Micro-Alloyed Ultra-High Strength Steel", Advanced Materials Research, Vols. 284-286, pp. 1275-1278, 2011

Online since:

July 2011

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$35.00

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