US3092492A - Magnesium-base alloy - Google Patents
Magnesium-base alloy Download PDFInfo
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- US3092492A US3092492A US78317A US7831760A US3092492A US 3092492 A US3092492 A US 3092492A US 78317 A US78317 A US 78317A US 7831760 A US7831760 A US 7831760A US 3092492 A US3092492 A US 3092492A
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- percent
- magnesium
- alloy
- rare earth
- zinc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 229910045601 alloy Inorganic materials 0.000 title claims description 38
- 239000000956 alloy Substances 0.000 title claims description 38
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 26
- 150000002910 rare earth metals Chemical class 0.000 claims description 24
- 239000011701 zinc Substances 0.000 claims description 24
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 23
- 229910052725 zinc Inorganic materials 0.000 claims description 23
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 19
- 229910052726 zirconium Inorganic materials 0.000 claims description 19
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 11
- 229910052749 magnesium Inorganic materials 0.000 claims description 11
- 239000011777 magnesium Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 description 11
- 238000012360 testing method Methods 0.000 description 10
- 238000005096 rolling process Methods 0.000 description 6
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 5
- 229910001122 Mischmetal Inorganic materials 0.000 description 5
- 229910052776 Thorium Inorganic materials 0.000 description 5
- 238000005275 alloying Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 229910052684 Cerium Inorganic materials 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 229910052779 Neodymium Inorganic materials 0.000 description 3
- 229910052777 Praseodymium Inorganic materials 0.000 description 3
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 3
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 3
- 229910000722 Didymium Inorganic materials 0.000 description 2
- 241000224487 Didymium Species 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 229910000861 Mg alloy Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- PMVSDNDAUGGCCE-TYYBGVCCSA-L Ferrous fumarate Chemical compound [Fe+2].[O-]C(=O)\C=C\C([O-])=O PMVSDNDAUGGCCE-TYYBGVCCSA-L 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- PGTXKIZLOWULDJ-UHFFFAOYSA-N [Mg].[Zn] Chemical compound [Mg].[Zn] PGTXKIZLOWULDJ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000013031 physical testing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 102220113151 rs376972065 Human genes 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 208000006379 syphilis Diseases 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- QMGSCCRUAVAONE-UHFFFAOYSA-N zinc zirconium Chemical compound [Zn].[Zn].[Zn].[Zr] QMGSCCRUAVAONE-UHFFFAOYSA-N 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
Definitions
- This invention relates to a magnesium-base alloy containing at least 85 weight percent of magnesium and is more particularlyconcerned with a thorium-free magnesium alloy having primarily the following composition.
- Alloying constituent balance Mg Rare earth metal 0.1 to 3 Zinc 0.1 to 1.4 Zirconium 0.01 to 1.0
- the alloy of the invention exhibits excellent high temperature properties comparable to the thorium-containing alloys but avoids the use of expensive thorium metal.
- the alloy also exhibits good resistance to creep both at ambient room temperatures and at elevated temperatures such as 400 F.
- the rare earth metals suitable for use in preparing the present alloy include: cerium, lanthanum, praseodymium, neodymium, didymium (a mixture of rare earth metals having praseodymium and neodymium as major constituents) or misch metal (a mixture of rare earth metals). Any of the foregoing rare earth metals may be used alone or in any combination in compounding the alloy.
- a commercially available misch metal sometimes known .as cerium misch metal, containing from 35 to 80 percent of cerium, the balance being rare earth metal and up to percent of none-rare earth metal, is the preferred rare earth metal ingredient of the alloy.
- the binary magnesium-base alloys containing rare earth metal are improved by the addition of zirconium thereto, i.e., they exhibit better strength properties.
- the ternary magnesium-base alloys containing certain proportions of rare earth metal and zirconium are further improved by the addition of small amounts of zinc in the range of 0.1 to 1.4 percent by weight. Both the zinc content of the alloy and the zinczirconium relationship are critical.
- the alloy of the in vention containing zirconium in low concentration should contain a correspondingly low zinc concentration. The use of more than a low concentration of zinc results in an alloy having slightly higher room temperature properties but lower strength properties at temperatures above 300-400 F. However, more zinc may be used to advantage 'at higher zirconium levels within the scope of the invention.
- the percent by weight of zinc employed in the alloy may vary from 0.1 to 1.4 percent but must not exceed a numerical value equal to about 0.5 plus 1.5 times the percent of zirconium in the alloy, i.e., percent ZnO.5 +1.5 percent Zr.
- the percent rare earth metal in the present alloy should equal or exceed, i.e., not be less than, the numerical difference between the percent of zinc and 1.5 times the percent of zirconium. Desirably the percent rare earth metal equals about 1.5 times the percent of zinc.
- the present alloy composition contains, by weight, from about 0.5 to 1.5 percent of rare earth metal, from 0.1 to 0.5 percent of zirconium, and from 0.3 to 0.7 percent of zinc, the balance being substantially commercial magnesium.
- small amounts of manganese may advantageously be added to the alloy of the inve tion containing less than about 0.2 percent of zirconium thereby to improve room temperature strength properties atent Patented June 4, 1963 and corrosion resistance of the alloy.
- the alloy contains at least 95 percent of magnesium.
- the present alloy exhibits superior creep resistance, at temperatures above about 400 F., compared to magnesium-zinc alloys which do not contain thorium and which are outside the scope of the invention.
- the zirconium referred to herein when incorporated in the alloy of the present invention, should be in a condition in which it (together with the magnesium which contains it) is readily soluble in an aqueous solution of hydrochloric acid consisting of 30 ml. of HCl (specific gravity 1.16) added to 85 ml. of water, sufficient acid being added during dissolution to maintain the init-ial concentration.
- hydrochloric acid consisting of 30 ml. of HCl (specific gravity 1.16) added to 85 ml. of water, sufficient acid being added during dissolution to maintain the init-ial concentration.
- the alloy may be made in the desired proportions according to the invention by melting together the alloying ingredients in proper proportions or by using ardeners of magnesium alloys containing the alloy constituents. Protection from oxidation during alloying is effected by the use of a magnesium chloride-free saline flux as in conventional alloying.
- the molten alloy may be flux refined by stirring the alloy with additional flux. The sorefined alloy is allowed to settle and then is separated from the flux as by decanting into a suitable casting mold, e.g., a slab mold for rolling stock.
- compositions according to the invention were prepared and cast into respective rolling slabs (e.g., 2 inches x 4 inches x 8 inches). Each slab was treated as follows: the faces of the slab were scalped to remove surface impurities or inclusions. The slab was heated to about 900 F. and reduced in thickness to about 0.1 inch sheet by rolling. The so-obtained sheet was further reduced by rolling according to conditions indicated in Tables I and II, to bring the sheet to one of several standard ASTM temper designations. Test coupons were cut from the so-prepared sheet and subjected to physical testing including tests of resistance to creep extension. Compression yield strength and tensile yield strength tests were carried out in the longitudinal direction of rolling. The alloy compositions, test conditions and the static strength properties are listed in Tables I and II.
- Sheet preparation R.E Zn Zr H24 T8 0 H24 T8 0 1 0.4 0. 2 0 26 21 16 9 17 11 Comparison 0. 4 0. 2 24 21 12 10 14 8 2 0.4 0.4 0. 2 27 24 17 12 16 11 0.4 0. 4 0.07 24 22 16 10 14 10 0. 4 0.4 24 20 14 9 13 9 0.4 0.6 24 21 14 8 11 8 0. 4 0. 6 0. 2 28 22 18 9 16 12 0.4 0.6 0.3 27 22 18 9 16 11 0.4 0.6 0. 5 28 23 19 11 17 12 1. 2 0. 2 0. 04 23 18 14 14 16 1O 1. 2 0. 5 0. 1 25 21 16 14 16 12 1 Balance magnesium.
- the present alloy exhibits creep resistance comparable to 5 the thorium-containing alloys.
- a magnesium-base alloy consisting of by Weight percent of the balance magnesium, the percent of zinc being not greater than 0.5 plus 1.5 times the percent of zirconium and the percent of rare earth metal being not less than Load and temperature a mixture of rare earth metals; Di
- magnesium-rare earth metal n i u .w Mm H m n n t 0 0d f. 0 m 9n 6mm n v o n m M 2 .1 0 t T mm rt so u n e mwF 0 n mm .m hem d f m mm o 3 m m 0 S 1 sn f to S 0 6 .i .mh rm e e a o t 3 6 r. WU W...
- Test coupons cut from the so-prepared sheet were tested for resistance to creep at 400 F.
- Table III are listed the compositions and the amount of stress necessary to produce the indicated percent extension in hours.
- a magnesium-base alloy consisting of, by weight, from 0.5 to 1.5 percent of rare earth metal, from 0.1 to
- a magnesium-base alloy consisting of, by weight, from 0.1 to 3 percent of rare earth metal, from 0.01 to 0.2 percent of zirconium, from 0.1 to 0.8 percent of zinc, from 0.1 to 0.5 percent of manganese and the balance magnesium, the percent of zinc being not greater than 0.5
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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)
Description
This invention relates to a magnesium-base alloy containing at least 85 weight percent of magnesium and is more particularlyconcerned with a thorium-free magnesium alloy having primarily the following composition.
Weight percent,
Alloying constituent: balance Mg Rare earth metal 0.1 to 3 Zinc 0.1 to 1.4 Zirconium 0.01 to 1.0
The alloy of the invention exhibits excellent high temperature properties comparable to the thorium-containing alloys but avoids the use of expensive thorium metal. The alloy also exhibits good resistance to creep both at ambient room temperatures and at elevated temperatures such as 400 F.
The rare earth metals suitable for use in preparing the present alloy include: cerium, lanthanum, praseodymium, neodymium, didymium (a mixture of rare earth metals having praseodymium and neodymium as major constituents) or misch metal (a mixture of rare earth metals). Any of the foregoing rare earth metals may be used alone or in any combination in compounding the alloy. A commercially available misch metal, sometimes known .as cerium misch metal, containing from 35 to 80 percent of cerium, the balance being rare earth metal and up to percent of none-rare earth metal, is the preferred rare earth metal ingredient of the alloy.
The binary magnesium-base alloys containing rare earth metal are improved by the addition of zirconium thereto, i.e., they exhibit better strength properties. Now it has been found that the ternary magnesium-base alloys containing certain proportions of rare earth metal and zirconium are further improved by the addition of small amounts of zinc in the range of 0.1 to 1.4 percent by weight. Both the zinc content of the alloy and the zinczirconium relationship are critical. The alloy of the in vention containing zirconium in low concentration should contain a correspondingly low zinc concentration. The use of more than a low concentration of zinc results in an alloy having slightly higher room temperature properties but lower strength properties at temperatures above 300-400 F. However, more zinc may be used to advantage 'at higher zirconium levels within the scope of the invention.
Thus it is found that the percent by weight of zinc employed in the alloy may vary from 0.1 to 1.4 percent but must not exceed a numerical value equal to about 0.5 plus 1.5 times the percent of zirconium in the alloy, i.e., percent ZnO.5 +1.5 percent Zr. The percent rare earth metal in the present alloy should equal or exceed, i.e., not be less than, the numerical difference between the percent of zinc and 1.5 times the percent of zirconium. Desirably the percent rare earth metal equals about 1.5 times the percent of zinc.
Preferably the present alloy composition contains, by weight, from about 0.5 to 1.5 percent of rare earth metal, from 0.1 to 0.5 percent of zirconium, and from 0.3 to 0.7 percent of zinc, the balance being substantially commercial magnesium.
If desired, small amounts of manganese (0.1 to 0.5%) may advantageously be added to the alloy of the inve tion containing less than about 0.2 percent of zirconium thereby to improve room temperature strength properties atent Patented June 4, 1963 and corrosion resistance of the alloy. Preferably the alloy contains at least 95 percent of magnesium.
The present alloy exhibits superior creep resistance, at temperatures above about 400 F., compared to magnesium-zinc alloys which do not contain thorium and which are outside the scope of the invention.
In general, the zirconium referred to herein, when incorporated in the alloy of the present invention, should be in a condition in which it (together with the magnesium which contains it) is readily soluble in an aqueous solution of hydrochloric acid consisting of 30 ml. of HCl (specific gravity 1.16) added to 85 ml. of water, sufficient acid being added during dissolution to maintain the init-ial concentration.
The alloy may be made in the desired proportions according to the invention by melting together the alloying ingredients in proper proportions or by using ardeners of magnesium alloys containing the alloy constituents. Protection from oxidation during alloying is effected by the use of a magnesium chloride-free saline flux as in conventional alloying. The molten alloy may be flux refined by stirring the alloy with additional flux. The sorefined alloy is allowed to settle and then is separated from the flux as by decanting into a suitable casting mold, e.g., a slab mold for rolling stock.
EXAMPLES To illustrate the advantageous results which can be achieved by the present invention a series of compositions according to the invention were prepared and cast into respective rolling slabs (e.g., 2 inches x 4 inches x 8 inches). Each slab was treated as follows: the faces of the slab were scalped to remove surface impurities or inclusions. The slab was heated to about 900 F. and reduced in thickness to about 0.1 inch sheet by rolling. The so-obtained sheet was further reduced by rolling according to conditions indicated in Tables I and II, to bring the sheet to one of several standard ASTM temper designations. Test coupons were cut from the so-prepared sheet and subjected to physical testing including tests of resistance to creep extension. Compression yield strength and tensile yield strength tests were carried out in the longitudinal direction of rolling. The alloy compositions, test conditions and the static strength properties are listed in Tables I and II.
Table I Physical properties of sheet, strengths in 1,000s of p.s.i.
a Composition, Test and temperature weight percent Test No.
CYS, F. TYS, 500F.
Sheet preparation R.E Zn Zr H24 T8 0 H24 T8 0 1 0.4 0. 2 0 26 21 16 9 17 11 Comparison 0. 4 0. 2 24 21 12 10 14 8 2 0.4 0.4 0. 2 27 24 17 12 16 11 0.4 0. 4 0.07 24 22 16 10 14 10 0. 4 0.4 24 20 14 9 13 9 0.4 0.6 24 21 14 8 11 8 0. 4 0. 6 0. 2 28 22 18 9 16 12 0.4 0.6 0.3 27 22 18 9 16 11 0.4 0.6 0. 5 28 23 19 11 17 12 1. 2 0. 2 0. 04 23 18 14 14 16 1O 1. 2 0. 5 0. 1 25 21 16 14 16 12 1 Balance magnesium.
NorE.R.E.=rare earth metal; CYS=compression yield strength; TYS=tensile yield strength; H24=sheet reduced 30% in one pass, 750 F. entry and 450 F. exit; then heat treated 1 hour at 500 F.; T8= sheet reduced 20% in one pass, 950 F. entry and 550 F. exit; then heat treated 1 hour at 500 F.; 0=sheet reduced 40% in one pass, 750 F. entry and 450 F. exit; then heat treated 1 hour at 700 F.
These test results are also listed in in Table III it may be seen that listed; lues iurn.
commercial rare earth metal ircon From the data listed =didymium, =0.1% elastic extension under load values 5T=0.5% permanent extension under load ve nium, from 0.1 to 1.4 percent of zinc and zirco sistance to creep.
Table III as comparison tests.
the present alloy exhibits creep resistance comparable to 5 the thorium-containing alloys.
1 claim I. A magnesium-base alloy consisting of by Weight percent of the balance magnesium, the percent of zinc being not greater than 0.5 plus 1.5 times the percent of zirconium and the percent of rare earth metal being not less than Load and temperature a mixture of rare earth metals; Di
and praseodymium;
der load values listed; 0.
7 from 0.1 to 3 percent of rare earth metal, from 0.01 to 1 tempen, rolling slab reduced 92% by hot rolling at 850 F., then reduced 40% in one and heat treated 1 hr. at 500 F.
larly tested.
Percent creep extension simi Table II Composition, weight By way of comparison, magnesium-rare earth metal n i u .w Mm H m n n t 0 0d f. 0 m 9n 6mm n v o n m M 2 .1 0 t T mm rt so u n e mwF 0 n mm .m hem d f m mm o 3 m m 0 S 1 sn f to S 0 6 .i .mh rm e e a o t 3 6 r. WU W... 94199 e S 4 5 1 s 1 0 m C an tm u 5% 8%0 f S mm h 7604 o e. m n H 6 8 6 6 S D F 0 mmmfifia wmwfinm V c m m m O R 00000000000 m cm mm Mmm U 2504 s eh. &L&& 0 4 4 s m m Y we m m m. m mimaaeaainw x a H or ooadooooaoo e arm I m p b e r K m e .I. Z 5 m mnnmaumema a m 0.LQ0.L3.LL0.00. gW T t H i .L n n Z n 40 1 1 1 0d HW 0 0 nm00mflm0 V. 0 Mr fi a 0 to R m 0000000 W on mp t h 0 S m m s n H m m. .1 mm 3 o. T u u R 0 W .1 r a n F 4 D S n e K m a m mnmwmm m mm M 8 e e e n H o oo o o mm w M h m S Wm H r 010 H D 0 O 0 004 au H F 007 M n e.. o 2 OH W MW 1 W 8 237 11 .m new 0 s T .0 mm m N f D O K H 7 u G.m T 0 013 n n .A MUD ..L 1 H noun s. m gd 0x B 6 P in u 7 N n m m o r 20 n 235%. 0, 1m 0 I Z 0 0 Q0000. m MW n I h a e e m 22444666625 d MM 8% m m oooooaooooo m m M 9 d o. e hm m 44444444422 h O a aoooaaaoorr r mm t R e ee m l [V C no m w m p m l d Q 0 a mm e H mm 0 c 0 N w B and na m e e m mm M m 0 6 T e O P BP e A 6 12 Nm r. t p
alloys containing zinc but no added zirconium were prepared and rolled into sheet form and The results of these comparison tests are also listed in Tables I and II.
1 Balance magnesium. 1! Alloy sheet in -H24 pass at 750 F. (450 F. exit),
NoTE.MM=misch metal, product, a mixture of neodymium =0.2% permanent extension on 0.21 listed.
the manner described above. Test coupons cut from the so-prepared sheet were tested for resistance to creep at 400 F. In Table III are listed the compositions and the amount of stress necessary to produce the indicated percent extension in hours.
' For purposes of comparison, coupons of thorium-containing alloys were similarly prepared and tested for re- 75 the percent of zinc less 1.5 times the percent of z 5 2. The magnesium-base alloy as in claim 1 in which the rare earth metal is misch metal.
3. A magnesium-base alloy consisting of, by weight, from 0.5 to 1.5 percent of rare earth metal, from 0.1 to
0.5 percent of zirconium, from 0.3 to 0.7 percent of zinc 5 and the balance magnesium, the percent of zinc being not greater than 0.5 plus 1.5 times the percent of zirconium and the percent of rare earth metal being not less than 1.5 times the percent of zinc.
4. A magnesium-base alloy consisting of, by weight, from 0.1 to 3 percent of rare earth metal, from 0.01 to 0.2 percent of zirconium, from 0.1 to 0.8 percent of zinc, from 0.1 to 0.5 percent of manganese and the balance magnesium, the percent of zinc being not greater than 0.5
plus 1.5 times the percent of zirconium and the percent 15 of rare earth metal being not less than 1.5 times the percent of zinc.
References Cited in the file of this patent UNITED STATES PATENTS 2,420,293 Beck et al May 13, 1947 2,604,396 Jessup July 22, 1952 2,788,272 Whiteheand et a1 Apr. 9, 1957 2,979,398 Foerster Apr. 11, 1961 FOREIGN PATENTS 513,627 Great Britain Oct. 18, 1939 532,143- Great Britain Jan. 17, 1941 806,104 Great Britain Dec. 17, 1958
Claims (1)
1. A MAGNESIUM-BASE ALLOY CONSISTING OF BY WEIGHT FROM 0.1 TO 3 PERCENT OF RARE EARTH METAL, FROM 0.01 TO 1 PERCENT OF ZIRCONIUM, FROM 0.1 TO 1.4 PERCENT OF ZINC AND THE BALANCE MAGNESIUM, THE PERCENT OF ZINC BEING NOT GREATER THAN 0.5 PLUS 1.5 TIMES THE PERCENT OF ZIRCONIUM AND THE PERCENT OF RARE EARTH METAL BEING NOT LESS THAN THE PERCENT OF ZINC LESS 1.5 TIMES THE PERCENT OF ZIRCONIUM.
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US78317A US3092492A (en) | 1960-12-27 | 1960-12-27 | Magnesium-base alloy |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4116731A (en) * | 1976-08-30 | 1978-09-26 | Nina Mikhailovna Tikhova | Heat treated and aged magnesium-base alloy |
US20060228249A1 (en) * | 2003-10-10 | 2006-10-12 | Magnesium Elektron Ltd. | Castable magnesium alloys |
WO2008009825A2 (en) * | 2006-07-20 | 2008-01-24 | Hispano Suiza | Process for manufacturing hot-forged parts made of a magnesium alloy |
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GB513627A (en) * | 1938-01-14 | 1939-10-18 | Ig Farbenindustrie Ag | Improvements in and relating to magnesium alloys |
GB532143A (en) * | 1939-03-04 | 1941-01-17 | Magnesium Elektron Ltd | Magnesium base alloys |
US2420293A (en) * | 1939-03-04 | 1947-05-13 | Beck Adolf | Magnesium base alloys |
US2604396A (en) * | 1950-06-02 | 1952-07-22 | Magnesium Elektron Ltd | Magnesium base alloys |
US2788272A (en) * | 1954-04-26 | 1957-04-09 | Magnesium Elektron Ltd | Magnesium base alloys |
GB806104A (en) * | 1956-07-30 | 1958-12-17 | Magnesium Elektron Ltd | Improvements in or relating to magnesium base alloys |
US2979398A (en) * | 1958-07-03 | 1961-04-11 | Dow Chemical Co | Magnesium-base alloy |
-
1960
- 1960-12-27 US US78317A patent/US3092492A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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GB513627A (en) * | 1938-01-14 | 1939-10-18 | Ig Farbenindustrie Ag | Improvements in and relating to magnesium alloys |
GB532143A (en) * | 1939-03-04 | 1941-01-17 | Magnesium Elektron Ltd | Magnesium base alloys |
US2420293A (en) * | 1939-03-04 | 1947-05-13 | Beck Adolf | Magnesium base alloys |
US2604396A (en) * | 1950-06-02 | 1952-07-22 | Magnesium Elektron Ltd | Magnesium base alloys |
US2788272A (en) * | 1954-04-26 | 1957-04-09 | Magnesium Elektron Ltd | Magnesium base alloys |
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US2979398A (en) * | 1958-07-03 | 1961-04-11 | Dow Chemical Co | Magnesium-base alloy |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4116731A (en) * | 1976-08-30 | 1978-09-26 | Nina Mikhailovna Tikhova | Heat treated and aged magnesium-base alloy |
US20060228249A1 (en) * | 2003-10-10 | 2006-10-12 | Magnesium Elektron Ltd. | Castable magnesium alloys |
US7935304B2 (en) | 2003-10-10 | 2011-05-03 | Magnesium Electron Ltd. | Castable magnesium alloys |
WO2008009825A2 (en) * | 2006-07-20 | 2008-01-24 | Hispano Suiza | Process for manufacturing hot-forged parts made of a magnesium alloy |
FR2904005A1 (en) * | 2006-07-20 | 2008-01-25 | Hispano Suiza Sa | PROCESS FOR MANUFACTURING HOT FORKED PIECES OF MAGNESIUM ALLOY. |
WO2008009825A3 (en) * | 2006-07-20 | 2009-01-29 | Hispano Suiza Sa | Process for manufacturing hot-forged parts made of a magnesium alloy |
US20100012234A1 (en) * | 2006-07-20 | 2010-01-21 | Hispano Suiza | Process for manufacturing hot-forged parts made of a magnesium alloy |
US8142578B2 (en) | 2006-07-20 | 2012-03-27 | Hispano Suiza | Process for manufacturing hot-forged parts made of a magnesium alloy |
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