JP2019532169A - 極低温特性に優れた中エントロピー合金 - Google Patents
極低温特性に優れた中エントロピー合金 Download PDFInfo
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- JP2019532169A JP2019532169A JP2018565038A JP2018565038A JP2019532169A JP 2019532169 A JP2019532169 A JP 2019532169A JP 2018565038 A JP2018565038 A JP 2018565038A JP 2018565038 A JP2018565038 A JP 2018565038A JP 2019532169 A JP2019532169 A JP 2019532169A
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 103
- 239000000956 alloy Substances 0.000 title claims abstract description 103
- 230000009466 transformation Effects 0.000 claims abstract description 24
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 10
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 description 23
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 239000011651 chromium Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 229910052804 chromium Inorganic materials 0.000 description 6
- 239000000470 constituent Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 4
- 238000005275 alloying Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 238000001887 electron backscatter diffraction Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009864 tensile test Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910017120 Fe—Mn—Ni Inorganic materials 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- RBIHPAASYUYQNM-UHFFFAOYSA-N OCl(=O)(=O)=O.OCl(=O)(=O)=O Chemical compound OCl(=O)(=O)=O.OCl(=O)(=O)=O RBIHPAASYUYQNM-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 229910001325 element alloy Inorganic materials 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
- C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/30—Ferrous alloys, e.g. steel alloys containing chromium with cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Hard Magnetic Materials (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
中エントロピー合金の製造
まず、純度99.9%以上のCo、Cr、Fe、Ni金属を準備した。
このように準備した金属を、下記表1のような混合割合となるように秤量した。
比較例のための合金の製造
実施例と同様の方法で、下記表2の組成に準じて比較例のための合金を製造した。
焼鈍処理した比較例1、比較例2、実施例1〜4によって製造した合金の実際成分をEDSを用いて分析し、下記表3はその結果を示したものである。
図1は焼鈍処理した比較例1、比較例2、実施例1〜4による合金の常温でのXRD測定結果を示すものである。
図2、図3及び下記表4は、それぞれ、本発明の比較例1、比較例2、実施例1〜4によって焼鈍処理された合金の常温(298K)及び極低温(77K)での引張試験結果を示すものである。
図4は本発明の実施例3による中エントロピー合金の常温及び極低温変形時の相変化に対するEBSD分析結果を示すものである。
Claims (13)
- Cr:6〜15at%、Fe:50〜64at%、Co:13〜25at%、Ni:13〜25at%を含有し、残部が不可避的不純物からなる合金であって、塑性変形時にFCC相からBCC相への変形誘起相変態が起こることを特徴とする、中エントロピー合金。
- 前記変形誘起相変態は準安定なFCC相で起こることを特徴とする、請求項1に記載の中エントロピー合金。
- 前記Crの含有量が7.5〜12.5at%である、請求項1に記載の中エントロピー合金。
- 前記Feの含有量が57.5%〜62.5at%である、請求項3に記載の中エントロピー合金。
- 前記CoがMo及びAlの中から選択された1種以上で置換可能であることを特徴とする、請求項1に記載の中エントロピー合金。
- 前記NiがMnで置換可能であることを特徴とする、請求項1または5に記載の中エントロピー合金。
- 前記中エントロピー合金の総at%に対して、C及びNのうちの1種以上を1at%未満で含んで製造された、請求項1または4に記載の中エントロピー合金。
- 前記中エントロピー合金の総at%に対して、C及びNのうちの1種以上を1at%未満で含んで製造された、請求項6に記載の中エントロピー合金。
- 前記変形が常温(298K)以下の温度で起こることを特徴とする、請求項1に記載の中エントロピー合金。
- 前記準安定FCC相の相分率が50%以上である、請求項2に記載の中エントロピー合金。
- 前記中エントロピー合金は、BCC相と準安定FCC相との混合相或いは準安定なFCC相のみからなる、請求項1に記載の中エントロピー合金。
- 前記中エントロピー合金は、常温(298K)での引張強度が226MPa以上であり、延伸率が67%以上である、請求項1に記載の中エントロピー合金。
- 前記中エントロピー合金は、極低温(77K)での引張強度が1024MPa以上であり、延伸率が47%以上である、請求項1に記載の中エントロピー合金。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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KR1020170094759A KR101910744B1 (ko) | 2017-07-26 | 2017-07-26 | 극저온 특성이 우수한 중엔트로피 합금 |
KR10-2017-0094759 | 2017-07-26 | ||
PCT/KR2017/009364 WO2019022283A1 (ko) | 2017-07-26 | 2017-08-28 | 극저온 특성이 우수한 중엔트로피 합금 |
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JP2019532169A true JP2019532169A (ja) | 2019-11-07 |
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JP2018565038A Pending JP2019532169A (ja) | 2017-07-26 | 2017-08-28 | 極低温特性に優れた中エントロピー合金 |
Country Status (5)
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US (1) | US20210054486A1 (ja) |
EP (1) | EP3660178B1 (ja) |
JP (1) | JP2019532169A (ja) |
KR (1) | KR101910744B1 (ja) |
WO (1) | WO2019022283A1 (ja) |
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- 2017-08-28 JP JP2018565038A patent/JP2019532169A/ja active Pending
- 2017-08-28 WO PCT/KR2017/009364 patent/WO2019022283A1/ko unknown
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CN111676409B (zh) * | 2020-06-11 | 2021-07-02 | 北京科技大学 | 一种低密度低成本Fe-Mn-Al-C中熵合金的制备方法 |
Also Published As
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KR101910744B1 (ko) | 2018-10-22 |
EP3660178B1 (en) | 2022-10-19 |
US20210054486A1 (en) | 2021-02-25 |
EP3660178A1 (en) | 2020-06-03 |
WO2019022283A1 (ko) | 2019-01-31 |
EP3660178A4 (en) | 2020-06-03 |
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