US3865575A - Thermoplastic prealloyed powder - Google Patents

Thermoplastic prealloyed powder Download PDF

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Publication number
US3865575A
US3865575A US316077A US31607772A US3865575A US 3865575 A US3865575 A US 3865575A US 316077 A US316077 A US 316077A US 31607772 A US31607772 A US 31607772A US 3865575 A US3865575 A US 3865575A
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US
United States
Prior art keywords
powder
thermoplastic
alloys
prealloyed
hardness
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
Application number
US316077A
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English (en)
Inventor
Timothy Earl Volin
John Stanwood Benjamin
Jay Michael Larson
Robert Lacock Cairns
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huntington Alloys Corp
Original Assignee
International Nickel Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by International Nickel Co Inc filed Critical International Nickel Co Inc
Priority to US316077A priority Critical patent/US3865575A/en
Priority to CA181,426A priority patent/CA1016369A/en
Priority to AU63303/73A priority patent/AU480935B2/en
Priority to GB5757173A priority patent/GB1457448A/en
Priority to FR7344916A priority patent/FR2210668B1/fr
Priority to DE2362650A priority patent/DE2362650C3/de
Priority to SE7316992A priority patent/SE400494B/xx
Priority to IT54338/73A priority patent/IT1000340B/it
Priority to JP48141793A priority patent/JPS4990665A/ja
Priority to US05/477,596 priority patent/US3930841A/en
Application granted granted Critical
Publication of US3865575A publication Critical patent/US3865575A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • B22F2009/041—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by mechanical alloying, e.g. blending, milling

Definitions

  • Curve A represents prealloyed powder which has been subjected to strain energy
  • Curve B representing prealloyed powder of the same composition but which has not been so processed.
  • Point I-I represents a common hardness value for each of the prealloyed powders at a given temperature, the respective powders having been consolidated to a density of at least 99 percent of theoretical.
  • thermoplastic the temperature differential, A T, between the respective hardness curves divided by the absolute melting temperature of the alloy, TM
  • a T the temperature differential between the respective hardness curves divided by the absolute melting temperature of the alloy, TM
  • TPC1 the thermoplastic Physical Characteristic
  • this ratio (AT/TM) should be at least 2 percent (TPC-Z) and most advantageously at least about 5 percent (TPC-3). This contributes greatly to minimum flow stress and lower pressing temperatures which in turn reduce the otherwise required load on a press (or equivalent functioning equipment).
  • the required compressive impact forces may be applied, for example, by milling elements, normally balls formed of steel, nickel, tungsten carbide, etc., which are kinetically maintained in a high state of relative motion, at least 50 percent to 75 percent of the balls being preferably maintained out of static self-contact at any given time.
  • milling elements normally balls formed of steel, nickel, tungsten carbide, etc.
  • Conventional ball mills as a general proposition, even if they can supply the necessary energy, require too long a period to do so. This is illustrated herein in connection with the data presented in Table IV.
  • nitrogen or nitrogen-oxygen atmospheres can be used.
  • l-lO attritor 1 gal. 9 300-400 5-50 l-lO attritor 4 gal. 13 200-300 do. l-l0 attritor 10 gal. 16 125-200 do. l-10 attritor 100 gal. 36 50-150 do. l-lO attritor
  • powder size a broad range may be used, e.g. up to 1000 microns; it is preferred, however, in using 5/16 inch diameter 52100 balls to use powder within the range of 20 to 350 microns.
  • the as-attrited powder was then canned in mild steel. evacuated, heated to 600F. under vacuum and sealed.
  • Compaction was accomplished by heating the sealed can to 1900F. and then upsetting the same against a blank die in an extrusion press. This was followed by vermiculite cooling. l-lot hardness was determined on the as-compacted material as shown in Table 11. Included for purposes of comparison are the corresponding hardness values of the lN100 powder in the asatomiz ed and compacted state.
  • EXAMPLE 11 Another batch of minus 325 mesh atomized lN-100 powder was processed as in Example I. In this instance, compacting in the extrusion press was conducted at 1950F. Tensile specimens were prepared from the processed billet. One specimen was tested in the attrited and as-compacted state at 1800F. Flow stresses were determined and were found to range from 4870 to 11,170 psi over strain rates of from 0.0025 to 0.625 min. At fracture, the elongation was 144 percent and the reduction in area was 99 percent. In marked contrast the flow stress for as-atomized lN-l00 upset compacted at 1950F. was from 8670 to 16,000 psi over the same strain rates, the elongation being 10 percent and reduction in area being 4.5 percent.
  • thermoplastic prealloyed powder in the consolidated form much ofthc carbide is present in the form of finely dispersed scmihours. This compares with but 2 hours for the as 5 coherent particles.
  • the reason for the difference in the atomized compacted powder treated in the same fashcarbide structure can be attributed to the great amount io In the latter 0388, Strength could o be imPFOVCd of deformation induced in the powder particles to inby ea e ment troduce the high strain energy state.
  • the pre-existing carbides in the powder are comminuted and redistrib- EXAMPLE m uted by this deformation process.
  • thermoplastic prealtractive feature in either case is the minimum of waste, loyed powder is considered to be significantly morphothe superalloys being quite costly, coupled with a minilogically or structurally different from conventional mum of finish machining. prealloyed powder in the final consolidated form.
  • the superalloys are 7 those containing up to 60%, e.g., l to 25%, chromium; up to 30%, e.g., to 25%, cobalt; up to e.g., l to 9%, aluminum; up to 8%, e.g., l to 7%, titanium, and particularly those alloys containing 4 or 5% or more of aluminum plus titanium; up to 30%, e.g., l to 8%, molybdenum; up to 25% e.g., 2 to tungsten; up to 10% columbium; up to 10% tantalum; up to 7% zirconium; up to 0.5% boron; up to 5% hafnium; up to 2% vanadium; up to 6% copper; up to 5% manganese; up to 70% iron; up to 4% silicon, and the balance essentially nickel.
  • Cobalt-base alloys of similar composition can be treated.
  • specific superalloys might be listed IN738 and 792, Rene alloys 41 and 95, Alloy 718, Waspaloy, Astrology, MarM alloys 200 and 246, Alloy 713, Alloys 500 and 700, A-286, etc.
  • Other base alloys such as titanium can be processed as well as refractory alloys such as SU16, TZM, Zir-' caloy, etc.
  • Prealloys contemplated herein can contain up to 10 percent or more by volume of a dispersoid such as Y O T150 La O etc.
  • said powder containing up to 60% chromium, up to 30% cobalt, up to 8% titanium, up to 30% molybdenum, up to 25% tungsten, up to 10% columbium, up to 10% tantalum, up to 7% zirconium, up to 0.5% boron, up to 5% hafnium, up to 6% copper, up to 5% manganese, up to iron, up to 4% silicon, and the balance essentially nickel, and being further characterized in that it is in the strain energy induced condition with a Thermoplastic Physical Characteristic of at least TPC-l.
  • New and improved superalloy prealloy powder in accordance with claim 1 having a Thermoplastic Physical Characteristic of at least TPC-2.
  • New and improved superalloy prealloy powder in accordance with claim 1 having a Thermoplastic Physical Characteristic of at least TPC-3.
  • New and improved superalloy prealloy powder in accordance with claim 2 in which the prealloy is a member of the group consisting of IN- 100, lN738, lN--792, Rene alloys 41 and 95, Waspaloy, Astroloy, Alloys 500, 700, 713 and 718, MarM alloys 200 and 246 and Alloy A286.

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  • Powder Metallurgy (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
US316077A 1972-12-18 1972-12-18 Thermoplastic prealloyed powder Expired - Lifetime US3865575A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US316077A US3865575A (en) 1972-12-18 1972-12-18 Thermoplastic prealloyed powder
CA181,426A CA1016369A (en) 1972-12-18 1973-09-19 Thermoplastic prealloyed powder
AU63303/73A AU480935B2 (en) 1972-12-18 1973-12-06 Production of wrought alloy products from atomised alloy powder of improved hot workability
GB5757173A GB1457448A (en) 1972-12-18 1973-12-12 Powder metallurgy process
FR7344916A FR2210668B1 (cs) 1972-12-18 1973-12-14
DE2362650A DE2362650C3 (de) 1972-12-18 1973-12-17 Verfahren zur Verbesserung der Wannverformbarkeit von Zerstäubungspulvern
SE7316992A SE400494B (sv) 1972-12-18 1973-12-17 Pulvermetallurgiskt forfarande och medel for framstellning av en plastiskt bearbetad produkt
IT54338/73A IT1000340B (it) 1972-12-18 1973-12-17 Polvere termoplastica prelegata procedimento per produrla ed oggetti ottenuti da essa
JP48141793A JPS4990665A (cs) 1972-12-18 1973-12-18
US05/477,596 US3930841A (en) 1972-12-18 1974-06-10 Thermoplastic prealloyed powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US316077A US3865575A (en) 1972-12-18 1972-12-18 Thermoplastic prealloyed powder

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/477,596 Division US3930841A (en) 1972-12-18 1974-06-10 Thermoplastic prealloyed powder

Publications (1)

Publication Number Publication Date
US3865575A true US3865575A (en) 1975-02-11

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ID=23227359

Family Applications (1)

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US316077A Expired - Lifetime US3865575A (en) 1972-12-18 1972-12-18 Thermoplastic prealloyed powder

Country Status (8)

Country Link
US (1) US3865575A (cs)
JP (1) JPS4990665A (cs)
CA (1) CA1016369A (cs)
DE (1) DE2362650C3 (cs)
FR (1) FR2210668B1 (cs)
GB (1) GB1457448A (cs)
IT (1) IT1000340B (cs)
SE (1) SE400494B (cs)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3976482A (en) * 1975-01-31 1976-08-24 The International Nickel Company, Inc. Method of making prealloyed thermoplastic powder and consolidated article
US4110131A (en) * 1975-10-20 1978-08-29 Bbc Brown Boveri & Company, Limited Method for powder-metallurgic production of a workpiece from a high temperature alloy
JPS53146920A (en) * 1977-04-04 1978-12-21 Crucible Inc Method of making perfectly compact product formed by nickellbase superalloy
US4209326A (en) * 1977-06-27 1980-06-24 American Can Company Method for producing metal powder having rapid sintering characteristics
US4216009A (en) * 1977-07-27 1980-08-05 Sumitomo Electric Industries, Ltd. Method of making alloy and carbide powders of molybdenum and tungsten
US4432795A (en) * 1979-11-26 1984-02-21 Imperial Clevite Inc. Sintered powdered titanium alloy and method of producing same
US20100008790A1 (en) * 2005-03-30 2010-01-14 United Technologies Corporation Superalloy compositions, articles, and methods of manufacture
US20130028679A1 (en) * 2007-02-26 2013-01-31 Greenleaf Technology Corporation Slotting cutter and inserts for same
US20150306710A1 (en) * 2014-04-04 2015-10-29 Special Metals Corporation High Strength Ni-Cr-Mo-W-Nb-Ti Welding Product and Method of Welding and Weld Deposit Using the Same
CN110096839A (zh) * 2019-05-17 2019-08-06 西北大学 一种热压实作用强度定量计算的方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT362289B (de) * 1977-10-13 1981-04-27 Simmering Graz Pauker Ag Verfahren zur herstellung aktivierter gemische aus vorzugsweise pulverfoermigen komponenten, welche zur weiterbearbeitung durch pressen und nachfolgendes sintern bestimmt sind

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3519503A (en) * 1967-12-22 1970-07-07 United Aircraft Corp Fabrication method for the high temperature alloys
US3591362A (en) * 1968-03-01 1971-07-06 Int Nickel Co Composite metal powder
US3631583A (en) * 1969-11-12 1972-01-04 Federal Mogul Corp Method for producing substantially solid extrusions from powdered metal
US3639179A (en) * 1970-02-02 1972-02-01 Federal Mogul Corp Method of making large grain-sized superalloys
US3671230A (en) * 1969-02-19 1972-06-20 Federal Mogul Corp Method of making superalloys
US3728088A (en) * 1968-03-01 1973-04-17 Int Nickel Co Superalloys by powder metallurgy

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3519503A (en) * 1967-12-22 1970-07-07 United Aircraft Corp Fabrication method for the high temperature alloys
US3591362A (en) * 1968-03-01 1971-07-06 Int Nickel Co Composite metal powder
US3728088A (en) * 1968-03-01 1973-04-17 Int Nickel Co Superalloys by powder metallurgy
US3671230A (en) * 1969-02-19 1972-06-20 Federal Mogul Corp Method of making superalloys
US3631583A (en) * 1969-11-12 1972-01-04 Federal Mogul Corp Method for producing substantially solid extrusions from powdered metal
US3639179A (en) * 1970-02-02 1972-02-01 Federal Mogul Corp Method of making large grain-sized superalloys

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3976482A (en) * 1975-01-31 1976-08-24 The International Nickel Company, Inc. Method of making prealloyed thermoplastic powder and consolidated article
US4110131A (en) * 1975-10-20 1978-08-29 Bbc Brown Boveri & Company, Limited Method for powder-metallurgic production of a workpiece from a high temperature alloy
JPS53146920A (en) * 1977-04-04 1978-12-21 Crucible Inc Method of making perfectly compact product formed by nickellbase superalloy
US4209326A (en) * 1977-06-27 1980-06-24 American Can Company Method for producing metal powder having rapid sintering characteristics
US4216009A (en) * 1977-07-27 1980-08-05 Sumitomo Electric Industries, Ltd. Method of making alloy and carbide powders of molybdenum and tungsten
US4432795A (en) * 1979-11-26 1984-02-21 Imperial Clevite Inc. Sintered powdered titanium alloy and method of producing same
US20100008790A1 (en) * 2005-03-30 2010-01-14 United Technologies Corporation Superalloy compositions, articles, and methods of manufacture
US20100158695A1 (en) * 2005-03-30 2010-06-24 United Technologies Corporation Superalloy Compositions, Articles, and Methods of Manufacture
US8147749B2 (en) 2005-03-30 2012-04-03 United Technologies Corporation Superalloy compositions, articles, and methods of manufacture
US20130028679A1 (en) * 2007-02-26 2013-01-31 Greenleaf Technology Corporation Slotting cutter and inserts for same
US9073131B2 (en) * 2007-02-26 2015-07-07 Greenleaf Technology Corporation Slotting cutter and inserts for same
US20150306710A1 (en) * 2014-04-04 2015-10-29 Special Metals Corporation High Strength Ni-Cr-Mo-W-Nb-Ti Welding Product and Method of Welding and Weld Deposit Using the Same
US9815147B2 (en) * 2014-04-04 2017-11-14 Special Metals Corporation High strength Ni—Cr—Mo—W—Nb—Ti welding product and method of welding and weld deposit using the same
CN110096839A (zh) * 2019-05-17 2019-08-06 西北大学 一种热压实作用强度定量计算的方法

Also Published As

Publication number Publication date
GB1457448A (en) 1976-12-01
SE400494B (sv) 1978-04-03
DE2362650C3 (de) 1978-11-23
JPS4990665A (cs) 1974-08-29
IT1000340B (it) 1976-03-30
FR2210668B1 (cs) 1978-12-29
DE2362650A1 (de) 1974-06-27
CA1016369A (en) 1977-08-30
AU6330373A (en) 1975-06-12
DE2362650B2 (de) 1978-03-30
FR2210668A1 (cs) 1974-07-12

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