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Title:
METHOD FOR PROCESSING HIGH-STRENGTH AND HIGH-TOUGHNESS FULLY-AUSTENITIC STAINLESS STEEL
Document Type and Number:
WIPO Patent Application WO/2017/215479
Kind Code:
A1
Abstract:
A method for processing high-strength and high-toughness fully-austenitic stainless steel, comprising the following steps: (1) performing solid-solution treatment on raw materials having certain chemical compositions, and cooling to obtain samples, the raw materials comprising the following components in percentage by weight: C: 0-0.2%, N: 0-0.2%, P ≤ 0.03%, S ≤ 0.001%, Si: 0.5-1%, Mn: 1.0-2.0%, Cr: 15-17%, Ni: 5-7%, with the balance being Fe, and the content of C and the content of N being not 0 simultaneously and the total content of C and N being 0.15-0.2%; and (2) performing hot-working deformation on the samples obtained in step (1) to obtain austenitic stainless steel. The yield strength of the stainless steel prepared by means of hot-working deformation is 2-3 times higher than that of the stainless steel prior to hot-working deformation, and the elongation thereof is 1.05-1.2 times higher than that of the stainless steel prior to hot-working deformation; and the stainless steel is of a fully-austenitic structure and is good in toughness and free of magnetism.

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Inventors:
WANG HONGTAO (CN)
LIU JIABIN (CN)
FANG YOUTONG (CN)
Application Number:
PCT/CN2017/087157
Publication Date:
December 21, 2017
Filing Date:
June 05, 2017
Export Citation:
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Assignee:
UNIV ZHEJIANG (CN)
International Classes:
C22C38/58; C21D6/00
Foreign References:
CN106167849A2016-11-30
CN101311291A2008-11-26
CN105200340A2015-12-30
CN102753717A2012-10-24
JPH06240357A1994-08-30
CN101045978A2007-10-03
Other References:
Z HAO, XIANCUN ET AL., HIGH AND ULTRA-HIGH STRENGTH STEELSTAINLESS STEEL, 31 May 2008 (2008-05-31), ISBN: 978-7-5024-4356-6
Attorney, Agent or Firm:
KG INTELLECTUAL PROPERTY LAW FIRM (CN)
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