Title:
NI-BASED ALLOY FOR HOT DIE, AND HOT FORGING DIE OBTAINED USING SAME
Document Type and Number:
WIPO Patent Application WO/2020/059846
Kind Code:
A1
Abstract:
Provided are the following: a Ni-based alloy for a hot die, which exhibits high compressive strength at high temperatures, good oxidation resistance and good creep resistance, and which can suppress work environment degradation and shape degradation; and a hot forging die obtained using same. This Ni-based alloy for a hot die contains 7.0-15.0% of W, 2.5-11.0% of Mo, 5.0-7.5% of Al, 0.5-3.0% of Cr, 0.5-7.0% of Ta, 0.015% or less of S, a total of 0-0.020% of one or more elements selected from among rare earth elements, Y, Ca and Mg, and a total of 0.01-0.5% of one or more elements selected from Zr and Hf, with the remainder being Ni and unavoidable impurities. The average crystal grain diameter is 0.5 mm or more.
Inventors:
SUZUKI SHOGO (JP)
UENO TOMONORI (JP)
AOKI CHUYA (JP)
UENO TOMONORI (JP)
AOKI CHUYA (JP)
Application Number:
PCT/JP2019/036918
Publication Date:
March 26, 2020
Filing Date:
September 20, 2019
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
International Classes:
C22C19/05
Domestic Patent References:
| WO2019106922A1 | 2019-06-06 | |||
| WO2019107502A1 | 2019-06-06 | |||
| WO2017204286A1 | 2017-11-30 |
Foreign References:
| JP2017031974A | 2017-02-09 | |||
| JPS5896846A | 1983-06-09 | |||
| CN1718803A | 2006-01-11 |
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