1、BS EN2954-002:2010ICS 49.025.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAerospace series Macrostructure oftitanium and titaniumalloy wrought productsPart 002: Macrostructure of bar,section, forging stock and forgingsThis British Standardwas published unde
2、r theauthority of the StandardsPolicy and StrategyCommittee on 31 March2010 BSI 2010ISBN 978 0 580 70736 0Amendments/corrigenda issued since publicationDate CommentsBS EN 2954-002:2010National forewordThis British Standard is the UK implementation of EN 2954-002:2010.The UK participation in its prep
3、aration was entrusted to TechnicalCommittee ACE/61/-/49, Titanium and its Alloys for Aerospace Purposes.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are r
4、esponsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 2954-002:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2954-002 March 2010 ICS 49.025.30 English Version Aerospace series - Macrostructure of titanium and titanium
5、alloy wrought products - Part 002: Macrostructure of bar, section, forging stock and forgings Srie arospatiale - Macrostructure de produits corroys en titane et en alliages de titane - Partie 002: Macrostructure des barres, profils, pices destines la forge et pices forges Luft- und Raumfahrt - Makro
6、struktur von geschmiedeten Erzeugnissen aus Titan und Titanlegierungen - Teil 002: Makrostruktur von Stangen, Profilen, Schmiedevormaterial und Schmiedestcken This European Standard was approved by CEN on 6 February 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations whic
7、h stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European St
8、andard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national
9、standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland
10、and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2954
11、-002:2010: EBS EN 2954-002:2010EN 2954-002:2010 (E) 2 Foreword This document (EN 2954-002:2010) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this S
12、tandard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the lat
13、est by September 2010, and conflicting national standards shall be withdrawn at the latest by September 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or
14、all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, H
15、ungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 2954-002:2010EN 2954-002:2010 (E) 3 Contents Page Foreword . 2 1 Scope 4 2 Normative references 4 3 Macr
16、ographs 4 Annex A (normative) Atlas of macrographic references 5 A.1 Macro grain size 5 A.2 Non-uniform macrostructure . 11 A.3 Tree-ring type structures 17 A.4 Macro grain size for common alpha-beta forgings 19 A.5 Macrostructure obscured by grain flow 21 A.6 Alpha segregates, alpha stringer or blo
17、cky alpha . 22 A.7 Beta fleck 25 Bibliography 26 BS EN 2954-002:2010EN 2954-002:2010 (E) 4 1 Scope This European Standard contains pictures of the macrostructure of bar, section, forging stock and forgings for titanium and titanium alloy wrought products. This European Standard shall be used in conj
18、unction with EN 2954-001.2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.EN
19、 2954-001, Aerospace series Macrostructure of titanium and titanium alloy wrought products Part 001: General requirements.3 Macrographs All macrographs are shown at actual size ( 1 magnification) when printed without any magnification or reduction. See Annex A (normative). BS EN 2954-002:2010EN 2954
20、-002:2010 (E) 5 Annex A (normative) Atlas of macrographic references A.1 Macro grain size See Figure A.1 (2MA1 to 2MA6). 1) 2MA1 Level 10 1) Additional indication from publication ETTC 3. BS EN 2954-002:2010EN 2954-002:2010 (E) 6 2MA2 Level 20 BS EN 2954-002:2010EN 2954-002:2010 (E) 7 2MA3 Level 30
21、BS EN 2954-002:2010EN 2954-002:2010 (E) 8 2MA4 Level 40 BS EN 2954-002:2010EN 2954-002:2010 (E) 9 2MA5 Level 50 BS EN 2954-002:2010EN 2954-002:2010 (E) 10 2MA6 Level 60 Figure A.1 BS EN 2954-002:2010EN 2954-002:2010 (E) 11 A.2 Non-uniform macrostructure See Figure A.2 (2MA20 to 2MA25). 1) 2MA20 BS E
22、N 2954-002:2010EN 2954-002:2010 (E) 12 2MA21 BS EN 2954-002:2010EN 2954-002:2010 (E) 13 2MA22 BS EN 2954-002:2010EN 2954-002:2010 (E) 14 2MA23 BS EN 2954-002:2010EN 2954-002:2010 (E) 15 2MA24 BS EN 2954-002:2010EN 2954-002:2010 (E) 16 2MA25 Figure A.2 BS EN 2954-002:2010EN 2954-002:2010 (E) 17 A.3 T
23、ree-ring type structures See Figure A.3 (2MA40 to 2MA42). 1) 2MA40 BS EN 2954-002:2010EN 2954-002:2010 (E) 18 2MA41 and 2MA42 Figure A.3 BS EN 2954-002:2010EN 2954-002:2010 (E) 19 A.4 Macro grain size for common alpha-beta forgings See Figure A.4 (2MA60 to 2MA62). 2MA60 2MA61 BS EN 2954-002:2010EN 2
24、954-002:2010 (E) 20 2MA62 Figure A.4 BS EN 2954-002:2010EN 2954-002:2010 (E) 21 A.5 Macrostructure obscured by grain flow See Figure A.5 (2MA70). 2MA70 Figure A.5 BS EN 2954-002:2010EN 2954-002:2010 (E) 22 A.6 Alpha segregates, alpha stringer or blocky alpha See Figure A.6 (2MA80 to 2MA84). 1) 2MA80
25、 Alpha segregates, alpha stringer BS EN 2954-002:2010EN 2954-002:2010 (E) 23 2MA81 Alpha segregates, blocky alpha 2MA82 Alpha segregates, blocky alpha BS EN 2954-002:2010EN 2954-002:2010 (E) 24 2MA83 Alpha segregates, blocky alpha 2MA84 Alpha segregates, blocky alpha Figure A.6 BS EN 2954-002:2010EN
26、 2954-002:2010 (E) 25 A.7 Beta fleck See Figure A.7 (2MA100). 2MA100 Figure A.7 BS EN 2954-002:2010EN 2954-002:2010 (E) 26 Bibliography 1 AMS 2380, Approval and control of premium-quality titanium alloys. BS EN 2954-002:2010This page has been intentionally left blank BS EN2954-002:2010BSI GroupHeadq
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