Title:
高強度鋼を熱処理する方法およびそれから得られる製品
Document Type and Number:
Japanese Patent JP7190216
Kind Code:
B2
Abstract:
Provided in the present disclosure is a method of heat treating a high-strength steel, wherein the high-strength steel comprises, by weight: 0.30-0.45% C, 1.0% or less Si, 0.20-2.5% Mn, 0.20-2.0% Cr, 0.15-0.50% Mo, 0.10-0.40% V, 0.2% or less Ti, 0.2% or less Nb, and a balance of Fe and other alloy elements and impurities, wherein the above alloy elements make Eq(Mn) according to the following formula (1) no less than 1.82, which method comprises the steps of 1) austenitizing; 2) carbide precipitation; and 3) tempering. The heat-treated steel in accordance with the present invention has high strength, high ductility and high toughness at the same time, especially improved reduction in area of tensile sample, so that it is particularly suitable for preparing spring members for vehicle suspension. EqMn=Mn+0.26Si+3.50P+1.30Cr+2.67Mo
Inventors:
易 ▲紅▼▲亮▼
周 ▲シュー▼
▲楊▼ ▲達▼朋
秦 ▲華▼▲傑▼
Bear stream
王 国▲棟▼
周 ▲シュー▼
▲楊▼ ▲達▼朋
秦 ▲華▼▲傑▼
Bear stream
王 国▲棟▼
Application Number:
JP2021573256A
Publication Date:
December 15, 2022
Filing Date:
October 18, 2019
Export Citation:
Assignee:
IRONOVATION MATERIALS TECHNOLOGY CO., LTD.
International Classes:
C21D9/02; C22C38/00; C22C38/38
Domestic Patent References:
| JP2013104070A |
Foreign References:
| CN108374127A |
Attorney, Agent or Firm:
Patent Attorney Corporation R&C
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