NO764316L - - Google Patents
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- Publication number
- NO764316L NO764316L NO764316A NO764316A NO764316L NO 764316 L NO764316 L NO 764316L NO 764316 A NO764316 A NO 764316A NO 764316 A NO764316 A NO 764316A NO 764316 L NO764316 L NO 764316L
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- Prior art keywords
- weight
- rare earth
- earth metals
- alloys
- alloys according
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- 229910045601 alloy Inorganic materials 0.000 claims description 46
- 239000000956 alloy Substances 0.000 claims description 46
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 32
- 150000002910 rare earth metals Chemical class 0.000 claims description 32
- 239000011701 zinc Substances 0.000 claims description 18
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 17
- 229910052725 zinc Inorganic materials 0.000 claims description 17
- 229910052684 Cerium Inorganic materials 0.000 claims description 16
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 16
- 229910052779 Neodymium Inorganic materials 0.000 claims description 12
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 12
- 230000032683 aging Effects 0.000 claims description 10
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 8
- 229910052746 lanthanum Inorganic materials 0.000 claims description 8
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 8
- 229910052845 zircon Inorganic materials 0.000 claims description 8
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 8
- 238000010791 quenching Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 2
- 238000004090 dissolution Methods 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 239000011572 manganese Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 229910052727 yttrium Inorganic materials 0.000 claims description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 claims 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 1
- 241000208698 Drosera Species 0.000 claims 1
- 235000008497 Drosera rotundifolia Nutrition 0.000 claims 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims 1
- 229910052776 Thorium Inorganic materials 0.000 claims 1
- 229910052790 beryllium Inorganic materials 0.000 claims 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims 1
- 229910052797 bismuth Inorganic materials 0.000 claims 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims 1
- 229910052793 cadmium Inorganic materials 0.000 claims 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims 1
- 229910052791 calcium Inorganic materials 0.000 claims 1
- 239000011575 calcium Substances 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 239000010949 copper Substances 0.000 claims 1
- 229910052733 gallium Inorganic materials 0.000 claims 1
- 239000012535 impurity Substances 0.000 claims 1
- 229910052738 indium Inorganic materials 0.000 claims 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- 229910052744 lithium Inorganic materials 0.000 claims 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims 1
- 229910052709 silver Inorganic materials 0.000 claims 1
- 239000004332 silver Substances 0.000 claims 1
- 229910052716 thallium Inorganic materials 0.000 claims 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 8
- 238000005266 casting Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 229910001093 Zr alloy Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000722 Didymium Inorganic materials 0.000 description 1
- 241000224487 Didymium Species 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
- C22C23/04—Alloys based on magnesium with zinc or cadmium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
- C22C23/06—Alloys based on magnesium with a rare earth metal as the next major constituent
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Dental Preparations (AREA)
- Continuous Casting (AREA)
Description
Nærværende oppfinnelse vedrører nye magnes.tumleger.i.nger. The present invention relates to new magnetic tumblers.
Magnesiumlegeringer finner anvendelse overalt hvor det er viktigMagnesium alloys are used wherever it is important
med liten vekt, og magnesiumlegeringer anvendes spesielt 1 luft-fartsindustrien. Kjente magnesiumlegeringer rned fordelaktige mekaniske egenskaper omfatter legeringer som inneholder sink og sjeldne jordmetall-blandlnger, som inneholder en høy andel cerium. with little weight, and magnesium alloys are used especially in the aerospace industry. Known magnesium alloys with advantageous mechanical properties include alloys containing zinc and rare earth metal mixtures containing a high proportion of cerium.
En slik kjent legering inneholder ca. 4,5 vekts-'/- sink og ca.Such a known alloy contains approx. 4.5 weight-'/- of zinc and approx.
1,0 vekts-% sjeldne Jordmetaller inklusiv en høy andel cerium med zirkon tilsatt som kornforfiner. Disse legeringer kan ha gode mekaniske egenskaper (f.eks. en 0,2$-flytegrense på ca. 135 N/mm<2>",strekkfasthet på ca. 200 N/mm og bruddforlengelse på ca. k%), men de har dårlig støpbarhet, slik at det er vanskelig å støpe store stykker som har tilfredsstillende kvalitet. Med rner kompliserte støpestykker kan sveising vanskeliggjøres. 1.0% by weight rare earth metals including a high proportion of cerium with zircon added as a grain refiner. These alloys may have good mechanical properties (eg a 0.2$ yield strength of about 135 N/mm<2>", tensile strength of about 200 N/mm and elongation at break of about k%), but they has poor castability, so that it is difficult to cast large pieces of satisfactory quality.With more complicated castings, welding can be difficult.
Man har. avstedkommet forbedret støpbarhet ved å anvende størreOne has. achieved improved castability by using larger
innhold av sink og sjeldne.jordmetaller, men disse har samtidig.en tendens til sprøhet. Sprøhet kan unngås ved hjelp av hydrogenbehand-ling, som innebærer at legeringen behandles ved høy temperatur i en hydrogen-atmosfere over lengre tid. Slike legeringer beskrives i britisk patent 1035260. Imidlertid er fremstillingskostnadene for disse legeringene meget høye p.g.a. at det kreves spesielle ovner og sikkerhetstiltak ved hydrogen-behandlingen. Etter behandlingen i hydrogen blir disse legeringene meget vanskelige å sveise. content of zinc and rare earth metals, but these also have a tendency towards brittleness. Brittleness can be avoided by means of hydrogen treatment, which means that the alloy is treated at high temperature in a hydrogen atmosphere for a long time. Such alloys are described in British patent 1035260. However, the production costs for these alloys are very high due to that special ovens and safety measures are required for the hydrogen treatment. After treatment in hydrogen, these alloys become very difficult to weld.
Ifølge-nærværende oppfinnelse har man fremskaffet magnesiumlegeringer, som inneholder sink og sjeldne jordmetaller, og som har god støpbarhet, sveiseegenskaper og tilfredsstillende strekkfasthet-egenskaper uten anvendelse av hydrogenbehandllng, men ved anvendelse av en sjelden jordmetall-blanding, som Inneholder en høy andel neodym og en mindre mengde eller ikke noe cerium og lantan. Disse legeringene har spesielt betydelig forbedret duktilitet sammen-lignet med de cerium-holdige legeringene. According to the present invention, magnesium alloys have been obtained, which contain zinc and rare earth metals, and which have good castability, welding properties and satisfactory tensile strength properties without the use of hydrogen treatment, but by using a rare earth metal mixture, which contains a high proportion of neodymium and a smaller amount or no cerium and lanthanum. These alloys have particularly significantly improved ductility compared to the cerium-containing alloys.
Ifølge et aspekt ved iwvrørende oppfinnelse har man fremskaffet en magnesiumlegerlng, som, bortsett fra v luse f or ur e n::. 11J. n ger , består av: According to one aspect of the present invention, a magnesium alloy has been provided which, apart from vlus for ur e n::. 11J. n ger , consists of:
hvorved de sjeldne jordmetallene inneholder minst 60 vekts-# neodym og 1 alt vesentlig ikke noe cerium eller lantan. whereby the rare earth metals contain at least 60 wt # neodymium and 1 substantially no cerium or lanthanum.
Hen neodym er dyr, men sjeldne jordmeta11-blandinger, som er kjent som "didymium", og som inneholder minst 60 vekts-^ neodym hvorved resten i alt vesentlig utgjøres av sjeldne jordmetaller såsom praseodym med en mindre mengde eller ikke noe cerium eller lantan, er kommersielt tilgjengelig. Innholdet av cerium og lantan tll-sammen er normalt mindre enn 2-3 vekts-% av de nærværende sjeldne jordmetaller, og andelen cerium og lantan i legeringen ifølge oppfinnelsen er følgelig meget liten. Neodymium is an expensive but rare earth metal mixture, known as "didymium", which contains at least 60% by weight of neodymium, with the rest being essentially rare earth metals such as praseodymium with a small amount or no cerium or lanthanum, are commercially available. The content of cerium and lanthanum together is normally less than 2-3% by weight of the rare earth metals present, and the proportion of cerium and lanthanum in the alloy according to the invention is consequently very small.
De sjeldne jordmetallene inneholder fortrinnsvis minst 75 vekts-^ neodym. The rare earth metals preferably contain at least 75% neodymium by weight.
Ifølge en utførelses/'orm ifølge oppfinnelsen inneholder legeringen fra 1-3 vekts-% sjeldne jordmetaller, og en foretrukket sammenset-ning her er 5_7 vekts-# sink og 1,5-3 vekts-% sjeldne jordmetaller. Man har funnet at man oppnår optimale egenskaper med 6-7 vekts-# According to an embodiment according to the invention, the alloy contains from 1-3% by weight of rare earth metals, and a preferred composition here is 5-7% by weight of zinc and 1.5-3% by weight of rare earth metals. It has been found that optimum properties are achieved with 6-7 weight #
sink og 2-3 vekts-$ sjeldne jordmetaller.zinc and 2-3 wt.-$ rare earth metals.
Det er normalt ønskelig å ha minst 0,4 vekts-% z i r kon som korn for-finer. Zlrkon-lnnholdet kan oppgå til I vekts-%. It is normally desirable to have at least 0.4% by weight z i r cone as a grain for-finer. The zinc content can amount to 1% by weight.
Hvis ønsket kan legeringen inneholde andre bestanddeler for å for-bedre andre egenskaper. Opp til 2,0 vekts-% mangan kan forekomme, men den maksimale mengde er begrenset av den gjensidige løselighet med zlrkon når den sistnevnte forekommer. Ytterligere eventuelle If desired, the alloy can contain other components to improve other properties. Up to 2.0% by weight of manganese may occur, but the maximum amount is limited by the mutual solubility with zlrkon when the latter occurs. Any further
tilsetningsmidler er følgende:additives are the following:
Ag 0-8 vekts-?«Ag 0-8 weight-?«
Cd 0-5Cd 0-5
Li 0-6Li 0-6
Ca 0-1About 0-1
Ga 0-2Gave 0-2
In 0-2In 0-2
Tl 0-5Tl 0-5
Pb 0-1Pb 0-1
Bi 0-1Bee 0-1
.Th 0-7.Th 0-7
Fe opp til 0,1Fe up to 0.1
De 0-0,05 The 0-0.05
Y 0-5 Y 0-5
Cu 0-0,5 Cu 0-0.5
Det skal bemerkes at yttrium ikke er klassifisert som et sjeldent jordmetall. It should be noted that yttrium is not classified as a rare earth metal.
Legeringene ifølge nærværende oppfinnelse kan anvendes for støping av gjenstander, og varmebehandling kreves normalt for oppnåelse av optimale mekaniske egenskaper. Varmebehandling omfatter normalt oppløsnlngsbehandling ved en høyere temperatur, vanligvis fra 450°C til legeringens solidus-punkt, (vanligvis ligger dette ved ca. 500°C) etterfulgt av bråkjøling og eldning ved en temperatur som mulig-gjør utfelling, hvorved eldnings-temperaturen vanligvis er fra 100 til 350°C Det foretrekkes å bråkjøle i vann for å oppnå optimale egenskaper, og bråkjøling i varmt vann minsker risikoen for sprekkdannelse. Typiske varmebehandlings-betingelser er 480°C i ca. 8 timer, etterfulgt av bråkjøling og eldning i 16 timer ved 250°C. , . The alloys according to the present invention can be used for casting objects, and heat treatment is normally required to achieve optimal mechanical properties. Heat treatment normally comprises solution treatment at a higher temperature, usually from 450°C to the alloy's solidus point, (usually this is around 500°C) followed by quenching and aging at a temperature that enables precipitation, whereby the aging temperature usually is from 100 to 350°C It is preferred to quench in water to achieve optimal properties, and quenching in hot water reduces the risk of cracking. Typical heat treatment conditions are 480°C for approx. 8 hours, followed by quenching and aging for 16 hours at 250°C. , .
En alternativ varmebehandling gjør en oppløsnings-behandling ved høy temperatur overflødig, og består ganske enkelt i eldning av det støpte stykke ved en temperatur hvorved utfelling forekommer. Denne behandling er funnet å gl spesielt høye flytegrenser, men forlengelsen ved maksimal strekkfasthet er vanligvis lavere enn de som fåes ved oppløsnings-varmebehandling etterfulgt av bråkjøling An alternative heat treatment makes a dissolution treatment at high temperature redundant, and consists simply in aging the cast piece at a temperature at which precipitation occurs. This treatment has been found to achieve particularly high yield strengths, but the elongation at maximum tensile strength is usually lower than that obtained by solution heat treatment followed by quenching
og eldning.and aging.
Legeringer ifølge nærværende oppfinnelse skal i.det følgende nær-mere beskrives ved hjelp av eksempler. Alloys according to the present invention shall in the following be described in more detail by means of examples.
EksemplerExamples
Legeringer, som' har de i nedonståenedo tabell 1 angitte sammenset-ninger, ble tilvirket,og prøvestykker ble støpt ved hjelp av konvensjonelle metoder. Sink ble tilsatt smeiten som rent metall, de sjeldne jordmetallene (RE) som en sjelden jordmetall-blanding inneholdende mer enn 7.5 vekts-% neodym og i alt vesentlig ikke noe lantan eller cerium, og zirkon som en magnesium/zirkon-legering inneholdende ca. 35 vekts-# zirkon. Alloys having the compositions given in Table 1 below were produced and test pieces were cast using conventional methods. Zinc was added to the smelting as pure metal, the rare earth metals (RE) as a rare earth metal mixture containing more than 7.5 wt% neodymium and essentially no lanthanum or cerium, and zircon as a magnesium/zirconium alloy containing approx. 35 wt-# zircon.
.For sammenlignings skyld ble også en lignende legering tilvirket, og denne legering inneholdt ca. 6% sink,J>% sjeldne Jordmetaller inneholdende en høy andel (minst 50%) cerium og ca. 0,75$ zirkon. .For the sake of comparison, a similar alloy was also produced, and this alloy contained approx. 6% zinc, J>% rare earth metals containing a high proportion (at least 50%) of cerium and approx. 0.75$ zircon.
Prøvestykkene ble gjenstand for. mekaniske prøver ifølge British Standard 18 etter varmebehandling. De anvendte varrnebahndlingene og de erholdte resultatene vises i tabell 2. The samples were subjected to mechanical tests according to British Standard 18 after heat treatment. The warning procedures used and the results obtained are shown in table 2.
Det ses av disse resultatene at legeringene ifølge nærværende oppfinnelse gir maksimale strekkfastheter og forlengelser sorn er betydelig større enn de ceriunWholdige legeringene når de blir gjenstand for oppløsningsvarmebehandling ved en temperatur på 450°C, etterfulgt av bråkjøling og eldning. It can be seen from these results that the alloys according to the present invention give maximum tensile strengths and elongations that are significantly greater than the cerium-containing alloys when they are subjected to solution heat treatment at a temperature of 450°C, followed by quenching and aging.
Por å vurdere virkningen av eldning alene ble de samme legeringene eldet fra støpt tilstand, og eldningsbetingelsene sammen med de erholdte resultatene vises i tabell 3«h In order to assess the effect of aging alone, the same alloys were aged from the as-cast state, and the aging conditions together with the results obtained are shown in Table 3«h
Man ser av disse resultater at eldning alene gir høy flytegrense og 0,1$ flytegrense men lavere maksimal strekkfasthet og forlengelse enn oppløsningsbehandlede legeringer. It can be seen from these results that aging alone gives a high yield strength and 0.1$ yield strength but lower maximum tensile strength and elongation than solution-treated alloys.
Ytterligere forsøk ble utført ved anvendelse av de samme prosedyrer som for legeringene 1-7*men med forsk.jelilge legeringssammen-setninger slik som vist 1 nedenstående tabell 4. "Sammenlignings"-legeringen inneholdt en sjelden jordrnetall-blanding, som Inneholdt en høy andel cerium, og- de sjeldne jordmetallene i legeringene 8-27 inneholdt over 75 vekts-# neodym og i alt vesentlig ikke noe cerium eller lantan. Man .ser av disse resultatene at de beste resultatene for de opp-løsningsbehandlede og eldningsbehandlede legeringer fåes ved et slnkinnhold på fra 6 til 7% og et innhold av sjeldne jordmetaller på fra 2 til 3 vekts-%. Legering 24, som inneholder 7, 1% sink, viste tegn til smelting ved oppløsningsvarme-behandling, og dette viser at det praktiske maksimale sinklnnholdet for fullstendig varrne-behandlede legeringer er " J%.•Eldning uten oppløsningsbehandling ga igjen høy flytegrense og lavere forlengelse. ;For å prøve kvaliteten til støpestykkene ble legeringene 8-27 vurdert radiografisk ved anvendelse av ASTM-metoden for 0,75" tykk. Zr-legeringsplate. Svampporøsiteten angis ved hjelp av en skala o-8, og resultatene vises i tabell 5* Disse resultatene viser at 1 det minste porøsiteten fåes med innhold av sink på 6-7$ og med over 2% sjeldne jordmetaller. Additional tests were performed using the same procedures as for alloys 1-7 but with different alloy compositions as shown in Table 4 below. cerium, and the rare earth metals in alloys 8-27 contained more than 75 wt-# of neodymium and essentially no cerium or lanthanum. It can be seen from these results that the best results for the solution-treated and age-treated alloys are obtained with a slink content of from 6 to 7% and a content of rare earth metals of from 2 to 3% by weight. Alloy 24, containing 7.1% zinc, showed evidence of melting upon solution heat treatment, and this shows that the practical maximum zinc content for fully heat-treated alloys is "J%".• Annealing without solution treatment again gave high yield strength and lower elongation. To test the quality of the castings, alloys 8-27 were evaluated radiographically using the ASTM method for 0.75" thick. Zr alloy plate. The sponge porosity is indicated using a scale o-8, and the results are shown in table 5* These results show that the smallest porosity is obtained with a zinc content of 6-7$ and with more than 2% rare earth metals.
Strekkegenskapene og støpeegenskapen til legeringene, som inneholder mer enn 3$ sjeldne jordmetaller, ble også målt og resultatene fremgår av nedenstående tabell 6. Støpefasthet ble vurdert ved hjelp av "Slope"-støpingsmetoden sopi er (beskrevet i "Slope Castings Test Results on Some Established and Experimental Magnesium Castings Alloys", D.J. Whitehead, The tensile properties and castability of the alloys containing more than 3$ rare earth metals were also measured and the results are shown in Table 6 below. Casting strength was assessed using the "Slope" casting method sopi er (described in "Slope Castings Test Results on Some Established and Experimental Magnesium Castings Alloys", D.J. Whitehead,
"Light Metals" 1958 sidene 391-395- I dette tilfelle ble bunnen til platen skåret, malt til 0,75" og røntgenfotografert. "Light Metals" 1958 pages 391-395- In this case the bottom of the plate was cut, ground to 0.75" and x-rayed.
Det sees at gode forlengelsesverdier ble bibeholdt ved høyt innhold av sjeldne jordmetaller; flytegrensene til legeringene 28-30 ble noe mindre enn det optimale på grunn av det lavere sinkinnhold. It is seen that good elongation values were maintained at high content of rare earth metals; the yield strengths of the alloys 28-30 were slightly less than the optimum due to the lower zinc content.
Legeringene med et høyere innhold av sjeldne jordmetaller viser forbedret støpbarhet. The alloys with a higher content of rare earth metals show improved castability.
For å vise virkningen av mindre mengder neodym-tilsetninger ble det tilvirket en legering (31) som Inneholdt ca. '(,5$ sink, 1,2$ sjeldne jordmetaller, hvilke inneholdt minst f>0$ neodym, og 0,7^1$ zirkon. Det ble også tilvirket en saminenllgnings-legering (32) som inneholdt ca. 4,3$ Zn, 1,1$ sjeldne jordmetaller, som inneholdt en større mengde cerium og 0,75$ zirkon. Disse legeringer ble støpt og gjort til gjenstand for strekkfasthetsprøver i likhet med de prøver som er nevnt ovenfor. Resultatene vises i tabell 7« Man ser at den neodymrlke legeringen ga høy forlengelse og markant bedre strekkfasthet enn den cerium-rike legeringen. To show the effect of smaller amounts of neodymium additions, an alloy (31) was produced which contained approx. (.5$ zinc, 1.2$ rare earth metals, which contained at least f>0$ neodymium, and 0.7^1$ zircon. A saminenllgning alloy (32) was also produced which contained about 4.3 $ Zn, 1.1$ rare earth metals, which contained a larger amount of cerium and 0.75$ zircon. These alloys were cast and subjected to tensile tests similar to the samples mentioned above. The results are shown in Table 7" Mon see that the neodymium-rich alloy gave high elongation and markedly better tensile strength than the cerium-rich alloy.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB52485/75A GB1525759A (en) | 1975-12-22 | 1975-12-22 | Magnesium alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO764316L true NO764316L (en) | 1977-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| NO764316A NO764316L (en) | 1975-12-22 | 1976-12-21 |
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| Country | Link |
|---|---|
| JP (1) | JPS5292811A (en) |
| AU (1) | AU497907B2 (en) |
| BE (1) | BE849733A (en) |
| CH (1) | CH617721A5 (en) |
| DE (1) | DE2658187A1 (en) |
| FR (1) | FR2336491A1 (en) |
| GB (1) | GB1525759A (en) |
| IL (1) | IL51141A (en) |
| IN (1) | IN155827B (en) |
| IT (1) | IT1065558B (en) |
| NL (1) | NL7614270A (en) |
| NO (1) | NO764316L (en) |
| SE (1) | SE7614364L (en) |
| ZA (1) | ZA767564B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04131350A (en) * | 1990-09-21 | 1992-05-06 | Sugitani Kinzoku Kogyo Kk | Magnesium alloy for casting with narrow freezing temperature range |
| JPH04297542A (en) * | 1991-03-25 | 1992-10-21 | Mitsui Eng & Shipbuild Co Ltd | Lightweight mg matrix composite alloy excellent in corrosion resistance and workability and having high toughness and its production |
| DE69214735T2 (en) * | 1991-07-26 | 1997-03-20 | Toyota Motor Co Ltd | Heat-resistant magnesium alloy |
| JP2725112B2 (en) * | 1992-03-25 | 1998-03-09 | 三井金属鉱業株式会社 | High strength magnesium alloy |
| JP2604663B2 (en) * | 1992-03-25 | 1997-04-30 | 三井金属鉱業株式会社 | Lightweight high strength magnesium alloy |
| JP2604670B2 (en) * | 1992-05-22 | 1997-04-30 | 三井金属鉱業株式会社 | High strength magnesium alloy |
| JPH10140304A (en) * | 1996-11-01 | 1998-05-26 | Toyota Central Res & Dev Lab Inc | Heat treating method for magnesium alloy |
| EP0960806A1 (en) * | 1998-05-29 | 1999-12-01 | Vela International Limited | Bicycle frame |
| DE19915238A1 (en) * | 1999-04-03 | 2000-10-05 | Volkswagen Ag | Magnesium alloy used e.g. in the manufacture of gear housing contains traces of cadmium, iron, nickel and lithium |
| JP2006089772A (en) * | 2004-09-21 | 2006-04-06 | Toyota Motor Corp | Magnesium alloy |
| DE102006015457A1 (en) | 2006-03-31 | 2007-10-04 | Biotronik Vi Patent Ag | Magnesium alloy and related manufacturing process |
| AT503854B1 (en) * | 2006-05-19 | 2008-01-15 | Arc Leichtmetallkompetenzzentrum Ranshofen Gmbh | MAGNESIUM-BASED ALLOY |
| DE102010046443A1 (en) * | 2010-09-24 | 2012-03-29 | Lutz Kadereit | wheelchair |
| DE102012108089A1 (en) | 2012-08-31 | 2014-05-15 | Gottfried Wilhelm Leibniz Universität Hannover | Magnesium alloy used for formation of work samples used as medical device e.g. implant and suture, comprises magnesium and zinc, and rare-earth metal in specified weight ratio |
| CN104195360B (en) * | 2014-08-26 | 2016-08-24 | 华南理工大学 | A kind of crystal fining method of Mg or Mg alloy |
| CN106834849B (en) * | 2016-12-22 | 2018-08-03 | 湘潭大学 | High strength heat resistant magnesium-rare earth |
| CN112609114B (en) * | 2020-11-27 | 2021-11-30 | 鼎泰(江苏)轻合金有限公司 | Magnesium alloy and preparation method and application thereof |
| CN114635068B (en) * | 2022-03-11 | 2023-06-23 | 上海交通大学 | High-strength and high-toughness cast magnesium rare earth alloy and preparation method thereof |
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|---|---|---|---|---|
| FR978259A (en) * | 1948-01-06 | 1951-04-11 | Magnesium Elektron Ltd | Improvements to magnesium-based alloys |
| DE1035912B (en) * | 1953-11-09 | 1958-08-07 | Siam | Magnesium alloys |
-
1975
- 1975-12-22 GB GB52485/75A patent/GB1525759A/en not_active Expired
-
1976
- 1976-12-18 IN IN2225/CAL/76A patent/IN155827B/en unknown
- 1976-12-21 SE SE7614364A patent/SE7614364L/en unknown
- 1976-12-21 ZA ZA767564A patent/ZA767564B/en unknown
- 1976-12-21 IT IT30723/76A patent/IT1065558B/en active
- 1976-12-21 NO NO764316A patent/NO764316L/no unknown
- 1976-12-21 IL IL51141A patent/IL51141A/en unknown
- 1976-12-21 CH CH1607576A patent/CH617721A5/en not_active IP Right Cessation
- 1976-12-22 FR FR7638694A patent/FR2336491A1/en active Granted
- 1976-12-22 NL NL7614270A patent/NL7614270A/en not_active Application Discontinuation
- 1976-12-22 AU AU20826/76A patent/AU497907B2/en not_active Expired
- 1976-12-22 BE BE173533A patent/BE849733A/en not_active IP Right Cessation
- 1976-12-22 DE DE19762658187 patent/DE2658187A1/en not_active Withdrawn
- 1976-12-22 JP JP15351876A patent/JPS5292811A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| ZA767564B (en) | 1977-11-30 |
| CH617721A5 (en) | 1980-06-13 |
| AU497907B2 (en) | 1979-01-18 |
| FR2336491B1 (en) | 1980-07-11 |
| IL51141A (en) | 1979-07-25 |
| IT1065558B (en) | 1985-02-25 |
| SE7614364L (en) | 1977-06-23 |
| JPS614906B2 (en) | 1986-02-14 |
| IL51141A0 (en) | 1977-02-28 |
| IN155827B (en) | 1985-03-16 |
| BE849733A (en) | 1977-04-15 |
| GB1525759A (en) | 1978-09-20 |
| JPS5292811A (en) | 1977-08-04 |
| DE2658187A1 (en) | 1977-06-23 |
| NL7614270A (en) | 1977-06-24 |
| AU2082676A (en) | 1978-06-29 |
| FR2336491A1 (en) | 1977-07-22 |
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