Title:
LARGE-SIZE DEFORMATION-RESISTANT MOLYBDENUM ALLOY BAR AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/174608
Kind Code:
A1
Abstract:
Provided are a large-size deformation-resistant molybdenum alloy bar and a preparation method therefor. The method comprises: a molybdenum alloy powder preparation step, a compression molding step, a high-temperature sintering step, a forging deformation step and an annealing step, wherein in the molybdenum alloy powder preparation step, a molybdenum source, a tungsten source and a zirconium source are respectively weighed according to the weight percentages of 5-15% of W, 0.5-2.5% of ZrO2 and the balance of Mo, and are then mixed to obtain a molybdenum alloy powder. The size of the molybdenum alloy bar prepared in the present invention is φ90-φ120 mm, the maximum length can reach 3000 mm, the maximum tensile strength at room temperature can reach 750 MPa, the maximum high-temperature strength at 1300ºC can reach 350 MPa, and the maximum recrystallization temperature can reach 1400ºC.
Inventors:
WANG CHENGYANG (CN)
DONG DI (CN)
XIONG NING (CN)
LIU GUOHUI (CN)
CHANG YANG (CN)
ZHANG SHUYONG (CN)
YANG YAJIE (CN)
WANG YUBIN (CN)
DONG DI (CN)
XIONG NING (CN)
LIU GUOHUI (CN)
CHANG YANG (CN)
ZHANG SHUYONG (CN)
YANG YAJIE (CN)
WANG YUBIN (CN)
Application Number:
PCT/CN2021/125234
Publication Date:
August 25, 2022
Filing Date:
October 21, 2021
Export Citation:
Assignee:
ADVANCED TECH & MATERIALS CO LTD (CN)
ATTL ADVANCED MAT CO LTD (CN)
ATTL ADVANCED MAT CO LTD (CN)
International Classes:
B22F3/10; C22C27/04; B22F3/17; C22C1/05; C22C32/00; C22F1/02; C22F1/18
Foreign References:
| CN104439236A | 2015-03-25 | |||
| EP3118339A1 | 2017-01-18 | |||
| CN110722152A | 2020-01-24 | |||
| CN109306421A | 2019-02-05 | |||
| CN110453127A | 2019-11-15 |
Other References:
"Materials Science and Engineering for Molybdenum", 31 July 2014, METALLURGICAL INDUSTRY PRESS, CN, ISBN: 978-7-5024-6595-7, article XU, KEDIAN: "Molybdenum-tungsten Alloy", pages: 582 - 591, XP009539174
"Material for Nuclear Power Plants", 31 January 2017, SHANGHAI SCIENTIFIC & TECHNICAL PUBLISHERS, CN, ISBN: 978-7-5478-3362-9, article WOLFGANG HOFFNER: "Oxide Dispersion Strengthening", pages: 84 - 85, XP009539175
"Material for Nuclear Power Plants", 31 January 2017, SHANGHAI SCIENTIFIC & TECHNICAL PUBLISHERS, CN, ISBN: 978-7-5478-3362-9, article WOLFGANG HOFFNER: "Oxide Dispersion Strengthening", pages: 84 - 85, XP009539175
Attorney, Agent or Firm:
BEIJING WUZHOUYANGHE & PARTNERS (CN)
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