GB2485107A - Armour - Google Patents

Armour Download PDF

Info

Publication number
GB2485107A
GB2485107A GB1202572.2A GB201202572A GB2485107A GB 2485107 A GB2485107 A GB 2485107A GB 201202572 A GB201202572 A GB 201202572A GB 2485107 A GB2485107 A GB 2485107A
Authority
GB
United Kingdom
Prior art keywords
bainite
cutting
carbon
elements
final transformation
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.)
Withdrawn
Application number
GB1202572.2A
Other versions
GB201202572D0 (en
Inventor
Andrew Baxter
Peter Brown
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.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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
Priority claimed from GB0914665A external-priority patent/GB0914665D0/en
Priority claimed from GB0915080A external-priority patent/GB0915080D0/en
Application filed by UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Publication of GB201202572D0 publication Critical patent/GB201202572D0/en
Publication of GB2485107A publication Critical patent/GB2485107A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0492—Layered armour containing hard elements, e.g. plates, spheres, rods, separated from each other, the elements being connected to a further flexible layer or being embedded in a plastics or an elastomer matrix
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0442—Layered armour containing metal
    • F41H5/0457—Metal layers in combination with additional layers made of fibres, fabrics or plastics
    • F41H5/0464—Metal layers in combination with additional layers made of fibres, fabrics or plastics the additional layers being only fibre- or fabric-reinforced layers

Abstract

A steel armour comprising between 90% and 50% bainite, the rest being austenite, in which excess carbon remains within the bainitic ferrite at a concentration beyond that consistent with equilibrium; there is also partial partitioning of carbon into the residual austenite. In one embodiment of the invention the bainite comprises in weight percent: carbon 0.6 to 1.1%, silicon 1.5 to 2.0%, manganese 0.5 to 1.8%, nickel up to 3%, chromium 1.0 to 1.5%, molybdenum 0.2 to 0.5%, vanadium 0.1 to 0.2 %, balance iron save for incidental impurities. In particular it was noted that excellent properties were obtained if the manganese content is about 1% by weight. By forming the steel as a pearlite sheet the elements (310,410) of the panel can be formed easily by cutting or stamping before final transformation to bainite. Cutting may also occur after final transformation using water- jet or laser cutting. Alternatively hot forging elements is described. The invention notes that such armours may have holes or slots to fragment incoming projectiles.
GB1202572.2A 2009-08-24 2010-08-20 Armour Withdrawn GB2485107A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0914665A GB0914665D0 (en) 2009-08-24 2009-08-24 Armour
GB0915080A GB0915080D0 (en) 2009-09-01 2009-09-01 Armour
PCT/GB2010/051387 WO2011023988A2 (en) 2009-08-24 2010-08-20 Armour

Publications (2)

Publication Number Publication Date
GB201202572D0 GB201202572D0 (en) 2012-03-28
GB2485107A true GB2485107A (en) 2012-05-02

Family

ID=43628487

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1202572.2A Withdrawn GB2485107A (en) 2009-08-24 2010-08-20 Armour

Country Status (4)

Country Link
US (1) US20120144990A1 (en)
EP (1) EP2470854A2 (en)
GB (1) GB2485107A (en)
WO (1) WO2011023988A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201012229D0 (en) * 2010-07-21 2010-09-08 Secr Defence An armour element
US9671199B1 (en) * 2014-05-06 2017-06-06 Premier Body Armor, LLC Armor steel products and method for making same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003208A1 (en) * 1978-01-05 1979-07-25 Ovako Oy Silicon alloyed steel
DE2817628A1 (en) * 1978-04-21 1979-10-25 Hilti Ag TOE, HIGH-STRENGTH STEEL, ITEMS THEREOF AND METHOD FOR THE PRODUCTION THEREOF
US5007326A (en) * 1990-01-16 1991-04-16 The United States Of America As Represented By The Secretary Of The Army Cast single plate P900 armor
GB2352726A (en) * 1999-08-04 2001-02-07 Secr Defence A steel and a heat treatment for steels
WO2006103431A1 (en) * 2005-03-30 2006-10-05 The Secretary Of State For Defence A ceramic armour element for use in armour
DE202006019711U1 (en) * 2006-12-28 2008-04-30 Müller, Lothar Body armor, consisting of a variety of armor plates

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3523057A (en) 1965-10-24 1970-08-04 Schjeldahl Co G T Ball and plastic armour plate
GB2149482B (en) 1981-08-13 1986-02-26 Harry Apprich Projectile-proof material
AU2009275671B2 (en) 2008-07-31 2014-11-20 The Secretary Of State For Defence Super bainite steels and methods of manufacture thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003208A1 (en) * 1978-01-05 1979-07-25 Ovako Oy Silicon alloyed steel
DE2817628A1 (en) * 1978-04-21 1979-10-25 Hilti Ag TOE, HIGH-STRENGTH STEEL, ITEMS THEREOF AND METHOD FOR THE PRODUCTION THEREOF
US5007326A (en) * 1990-01-16 1991-04-16 The United States Of America As Represented By The Secretary Of The Army Cast single plate P900 armor
GB2352726A (en) * 1999-08-04 2001-02-07 Secr Defence A steel and a heat treatment for steels
WO2006103431A1 (en) * 2005-03-30 2006-10-05 The Secretary Of State For Defence A ceramic armour element for use in armour
DE202006019711U1 (en) * 2006-12-28 2008-04-30 Müller, Lothar Body armor, consisting of a variety of armor plates

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BROWN P M et al, Hyper-strength bainitic steels; AIST PROCESS METALLURGY, PRODUCT QUALITY AND APPLICATIONS PROCEEDINGS. MATERIALS SCIENCE AND TECHNOLOGY CONFERENCE; NEW ORLEANS, SEPT 26-29, 2004; Vol1, Pages 433-438 *

Also Published As

Publication number Publication date
GB201202572D0 (en) 2012-03-28
US20120144990A1 (en) 2012-06-14
WO2011023988A3 (en) 2011-06-30
WO2011023988A2 (en) 2011-03-03
EP2470854A2 (en) 2012-07-04

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)