Heterogeneous low-carbon air-cooled granular bainite/crystalloid ferrite steel
Title：
Heterogeneous low-carbon air-cooled granular bainite/crystalloid ferrite steel
Application Number：
 00124468
Application Date：
 2000/09/08
Announcement Date：
 2001/03/28
Pub. Date：
Publication Number：
 1288971
Announcement Number：
 1113975
Grant Date：
Granted Pub. Date：
 2003-7-9
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 C22C 38/04, C22C 38/38
Applicant(s)：
 Qinghua Univ.
Inventor(s)：
 Fang Hongsheng, Xu Pingguang, Bai Bingzhe
Key Words：
 low-carbon, air-cooled, granular bainite, crystalloid ferrite, heterogeneoussteel
Abstract：
 The present invention belongs to the field of alloy steel design technology, its composition is formed from (wt%) C 0.06-0.15 wt%, Mn 1.90-2.60 wt% and Si 0,60-1.50 wt% as main alloy elements, the rest is Fe, besides, one or more than two kinds of the following elements of Cr 0-2.1 wt%, V less than or equal to 0.15 wt%, Al less than or equal to 0.15 wt%, Ti less than or equal to 0.10 wt% and B less than or equal to 0.040 wt%. also can be edded. Under the conditions of no Ni and Mo elements secondary steelmaking process, controlling rolling and controlling cooling and heat treatment, and when said steel is used for producing steel bar with large cross section, sigma b is greater than or equal to 820 MPa, sigma 0.2 is greater than or equal to 500 MPa and delta 5 is greater than or equal to 17%; and for producing hot-rolled medium plate, sigma b is greater than or equal to 850 MPa, sigma 0.2 is greater than or equal to 520 MPa, delta 5 is greater than or equal to 17% and A ky is greater than or equal to 40J. Said steel can be used as low-alloy wear-resistant components, etc.
Claim：
Priority：
PCT：
LegalStatus：

Recommend this patent:
1 2 3 4 5
Average ( 0 votes):
                                                                          Recommended Patents>>

Relevancy information

Mn-Si-Cr air-cooled granular bainite/ferrite polyphase steel


Other Patents of Same Inventor

Low carbon air cooled nodular bainite steel
Medium carbon air-cooled Mn/B bainitic steel
Antiwear surfacing welding alloy and electrode
Bainite/martensite multi-phase steel with air-cooled high hardenability
High-strength and high-toughness weldable air-cooled Hongkang bainite steel specially for railway frog
Medium-low carbon manganese system self-hardening bainite steel
Medium carbon and medium-high carbon manganese system self-hardening bainite steel
Mn-Si-Cr air-cooled granular bainite/ferrite polyphase steel
Mn-Cr-W series air-cooled bainitic steels



News & Events More>>

Last Update  
2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
2008-3-31
  Selected patents owned by Tsinghua University filed in 2006 and 2007 are load.







Copyright 2008-2015 All Rights Reserved Patent License of China.      Designed by Easygo