1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2017 SAE International All rights reserved. No part of this p
3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/standards.sae.org/AMS4368 AEROSPACE MATERIAL SPECIFICATION AMS4368 Issued 2017-07 Aluminum Alloy, Discontinuously
5、 Reinforced Hot Isostatically Pressed Shapes 6061B/SiC/40p (3m) (T1P) RATIONALE AMS4368 is a new specification for aluminum alloy hot isostatically pressed shapes produced from 6061B discontinuously reinforced with silicon carbide particulates. 1. SCOPE 1.1 Form This specification covers discontinuo
6、usly reinforced aluminum alloy (DRA) metal matrix composites (MMC) made by mechanical alloying of 6061B aluminum powder and SiC particulate, which is then consolidated by Hot Isostatic Pressing (HIP) into shapes between 12 to 100 in2(0.008 to 0.065 m2) cross-section inclusive. Tensile property respo
7、nse to heat treatment has been demonstrated on samples of 1 in2(645 mm2) maximum cross section (see 8.9). 1.2 Application HIPed shapes have been used typically for structural applications requiring high static strength, fatigue strength and high elastic modulus, but usage is not limited to such appl
8、ications. HIPed shapes may also be used as input to forging, rolling and extrusion processes. Subsequent heat treatment to the T6P/T62P temper is required to increase strength to levels required for service (see 3.4 and 3.4.1). 2. APPLICABLE DOCUMENTS The issue of the following documents in effect o
9、n the date of the purchase order forms a part of this specification to the extent specified herein. The supplier may work to a subsequent revision of a document unless a specific document issue is specified. When the referenced document has been cancelled and no superseding document has been specifi
10、ed, the last published issue of that document shall apply. 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org. AMS2355 Quality Assurance, Sampling and Testin
11、g Aluminum Alloys and Magnesium Alloy Wrought Products (Except Forging Stock), and Rolled, Forged, or Flash Welded Rings AMS2750 Pyrometry SAE INTERNATIONAL AMS4368 Page 2 of 6 AMS3025 Polyalkylene Glycol Heat Treat Quenchant ARP1917 Clarification of Terms Used in Aerospace Metals Specifications 2.2
12、 ANSI Accredited Publications Copies of these documents are available online at http:/webstore.ansi.org/. ANSI B46.1 Surface Texture, Surface Roughness, Waviness and Lay ANSI H35.1/H35.1M American National Standard Alloy and Temper Designation Systems for Aluminum ANSI H35.5 American National Standa
13、rd Nominclature for Aluminum Metal Matrix Composite Materials ANSI Y14.5M Dimension and Tolerance 2.3 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM B311 Density of Powder Metallurgy (
14、PM) Materials Containing Less Than Two Percent Porosity ASTM B660 Packaging/Packing of Aluminum and Magnesium Products ASTM B666/B666M Identification Marking of Aluminum and Magnesium Products ASTM E8/E8M Tension Testing of Metallic Materials 2.4 FEPA Available from Federation of the European Produc
15、ers of Abrasives www.fepa-abrasives.org. FEPA-Standard 42 Grains Of Fused Aluminium Oxide, Silicon Carbide And Other Abrasive Materials For Bonded Abrasives And For General Industrial Applications Microgrits F 230 To F 2000 3. TECHNICAL REQUIREMENTS 3.1 Component Materials 3.1.1 Aluminum Matrix Comp
16、osition Shall conform to the percentages by weight shown in Table 1, determined in accordance with AMS2355. Table 1 6061B composition Element Min Max Silicon 0.40 0.8 Iron - 0.7 Copper 0.15 0.40 Magnesium 0.8 1.2 Manganese - 0.15 Chromium 0.04 0.35 Zinc - 0.25 Titanium - 0.15 Oxygen - 0.6 Other Elem
17、ents, each - 0.05 Other Elements, total - 0.15 Aluminum remainder SAE INTERNATIONAL AMS4368 Page 3 of 6 3.1.2 Reinforcement Shall consist of silicon carbide particulate (SiC) having the following characteristics: Mean Diameter 3 m determined in accordance with F1200 from the FEPA-Standard 42. 3.2 Re
18、inforcement Volume Fraction The content of silicon carbide particulate shall be 40% 0.5% by volume determined through conversion from measured input material weights. 3.2.1 The aluminum matrix alloy and reinforcement particulate shall be mechanically alloyed to produce a uniform distribution of the
19、reinforcement particulate within the resultant discontinuously reinforced aluminum powder. 3.3 Condition Hot Isostatically Pressed (see 8.4) to a T1P condition. 3.3.1 Surface Condition If no surface finish is specified, the material shall be furnished with an as-sawn, as HIP, and/or machined surface
20、. Machined surfaces shall have surface finish no greater than 125 Ra in (3.2 m), determined in accordance with ANSI B46.1. 3.4 Response to T6P/T62P Heat Treatment Samples taken from the material (see 4.3) shall be solution heat treated followed by a 25% polymer glycol quench and artificially aged to
21、 the T6P/T62P condition. Pyrometry shall be in accordance with AMS2750. A Type 2 Quenchant in accordance with AMS3025 shall be used. 3.4.1 Heat Treatment Parameters (1 inch (25 mm) x 1 inch (25 mm) maximum section thickness) Solution Treatment: 995 F 9 F (535 C 5 C) for 1 hour minimum Quench: 25% Po
22、lyglycol 73 F 9 F (23 C 5 C), Transfer Time 7 seconds maximum T6P/T62P Artificial Aging at 347 F 9 F (175 C 5 C) for 2 hours followed by air cool 3.4.2 Tensile Properties A sample with less than 1 in2(645 mm2) cross-section from a lot shall be heat treated to the T6P/T62P condition, and shall have t
23、he properties shown in Table 2. Tensile properties shall be determined at room temperature and tested in accordance to ASTM E8/E8M. Table 2 - Minimum tensile properties (4D) Property Value Tensile Strength 72 ksi (500 MPa) Yield Strength 58 ksi (400 MPa) Strain to Failure 1% 3.4.2.1 Properties for s
24、izes HIP consolidated to other than 12 to 100 in2(0.008 to 0.065 m2) inclusive or for samples heat treated at 1 in2or greater shall be as agreed between purchaser and producer. 3.4.3 Density Shall be within the range of 2.90 to 2.92 g/cm (0.1048 to 0.1055 lb/in) determined using a water displacement
25、 method in accordance with ASTM B311; measurement may be made on the product or a sample after HIP or a sample after HIP and heat treatment. SAE INTERNATIONAL AMS4368 Page 4 of 6 3.5 Quality HIPed shapes, as received by purchaser, shall be uniform in quality and condition, sound, and free from imper
26、fections detrimental to usage of the shapes. 3.6 Tolerances Shall conform to +0.25/-0.000 inch (+6.35/-0.00 mm), unless specified by agreement between purchaser and supplier (see 8.3). 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The producer of HIPed shape shall supply all samp
27、les for producers tests and shall be responsible for the performance of all required tests. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the HIPed blanks conforms to specified requirements. 4.2 Classification of Tests All technical re
28、quirements are acceptance tests and shall be performed on each lot or each powder blend, as applicable. A powder blend is comprised of thoroughly intermingled powders of the same nominal composition. 4.3 Sampling and Testing Shall be in accordance with the following: a lot shall consist of all shape
29、s manufactured from a specific powder blend and HIPed together in a single cycle. Mechanical properties shall be determined using heat treated samples (see 3.4.) taken from a sample shape (component) or from material produced as an integral part (prolongation) of a shape (component) from the lot. 4.
30、3.1 Tensile Properties One tensile specimen from any location of a lot. 4.3.1.1 Tensile specimens shall be machined from a sample heat treated to the T6P/T62P condition (see 3.4). 4.3.1.2 Tensile testing shall be done in accordance with ASTM E8/8M. 4.3.2 Density One sample from each lot (see 3.4.2),
31、 unless a sampling plan has been agreed upon by purchaser and producer. 4.3.3 Dimensions Each piece, unless a sampling plan has been agreed upon by purchaser and producer. 4.4 Reports The producer of the product shall furnish with each shipment a report stating that the product conforms to the compo
32、sition of the matrix and the volume fraction of the reinforcement component, and showing the numerical results of tests on each lot to determine conformance to the other acceptance test requirements. This report shall include the purchase order number, lot number, AMS4368, serial numbers, when speci
33、fied, part number when applicable, as Hiped cross section area, and quantity. SAE INTERNATIONAL AMS4368 Page 5 of 6 4.4.1 When the product size is outside the range covered by 1.1, the report shall contain a statement to that effect. 4.4.2 When material produced to this specification is beyond the s
34、izes allowed in the scope of tables, or other exceptions are taken to the technical requirements listed in Section 3 (see 5.1.1), the report shall contain a statement “This material is certified as AMS4368(EXC) because of the following exceptions.” The specific exceptions shall be listed. 4.5 Resamp
35、ling and Retesting If any specimen used in the above tests fails to meet the specified requirements, disposition of the product may be based on the results of testing two additional specimens for each original nonconforming specimen. Failure of any retest specimen to meet the specified requirements
36、shall be cause for rejection of the product represented. 5. PREPARATION AND DELIVERY 5.1 Identification Shall be in accordance with ASTM B666/B666M. 5.1.1 When technical exceptions are taken (see 4.4.2), the material shall be marked with AMS4368(EXC). 5.2 Serialization When specified (see 8.10), eac
37、h HIPed shape shall be serialized with a unique, non-repeating serial number. 5.3 Packaging The product shall be prepared for shipment in accordance with in ASTM B660 and in compliance with applicable rules and regulations pertaining to the handling, packaging, and transportation of the product to e
38、nsure carrier acceptance and safe delivery. 6. ACKNOWLEDGMENT A producer shall mention this specification number in all quotations and when acknowledging purchase orders. 7. REJECTIONS Product not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejec
39、tion. 8. NOTES 8.1 Revision Indicator A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a
40、complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. 8.2 ANSI H35.5, Nomenclature System for Aluminum Metal Matrix Composite Materials, is used to describe the matrix composi
41、tion, type, volume fraction, and composition of the reinforcement materials as 6061B/SiC/40p. ANSI H35.1/H35.1 (M) American National Standard Alloy and Temper Designation Systems for Aluminum is used to describe the T1P and T6P/T62P temper designation. 8.3 Drawings shall be interpreted in accordance
42、 with ANSI Y14.5M, Dimension and Tolerance. 8.4 Material is supplied in the T1P condition for ease of machining and then subsequently T6P/T62P heat treated for strength. 8.5 Electrical Conductivity SAE INTERNATIONAL AMS4368 Page 6 of 6 8.6 Typical conductivity range of 17.0 to 23.0% IACS for As-HIPd
43、 product (T1P). 8.7 Terms used in AMS are clarified in ARP1917. 8.8 With the exceptions of density and particulate size, dimensions and properties in inch/pound units and the Fahrenheit temperatures are primary; dimensions and properties in SI units and the Celsius temperatures are shown as the appr
44、oximate equivalents of the primary units and are presented only for information. Density is in units of g/cm and particulate size is in micrometer. 8.9 Purchase documents should specify not less than the following: AMS4368 Dimensions of HIPed Shapes desired Serialization, if required (see 5.2) Quantity of HIPed Shapes desired Property and acceptance requirements from the cognizant engineering organization applicable to sizes outside the range listed in 3.4.1.1 Part number, if applicable PREPARED BY AMS COMMITTEE “D“
