ASD-STAN PREN 2954-002-2009 Aerospace series Macrostructure of titanium and titanium alloy wrought products Part 002 Macrostructure of bar section forging stock and forgings (Editi.pdf

1、ASD STANDARD NORME ASD ASD NORM prEN 2954-002 Edition P 1 April 2009 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATIONAvenue de Tervuren, 270 - B-1150 Brussels - Tel. + 32 2 775 8126 - Fax. + 32 2 775 8131 - www.asd-stan.orgICS: Descriptors: ENGLISH VERSION Ae

2、rospace series Macrostructure of titanium and titanium 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

3、 forge et pices forges Luft- und Raumfahrt Makrostruktur von geschmiedeten Erzeugnissen aus Titan und Titanlegierungen Teil 002: Makrostruktur von Stangen, Profilen, Schmiedevormaterial und Schmiedestcken This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The

4、 AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the tech

5、nical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and review by users and formal agreement of ASD-STAN, it will be submitted as a draft European Standard (prEN) to CEN (Europea

6、n Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implement the EN at national level by giving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. Edition a

7、pproved for publication 15 April 2009 Comments should be sent within six months after the date of publication to ASD-STAN Metallic Material Domain Copyright 2009 by ASD-STAN prEN 2954-002:2009 2 Contents Page Foreword2 1 Scope 3 2 Normative references 3 3 Macrographs 3 Annex A (normative) Atlas of m

8、acrographic references.4 A.1 Macro grain size.4 A.2 Non-uniform macrostructure. 10 A.3 Tree-ring type structures . 16 A.4 Macro grain size for common alpha-beta forgings . 18 A.5 Macrostructure obscured by grain flow .20 A.6 Alpha segregates, alpha stringer or blocky alpha 21 A.7 Beta fleck. 24 Bibl

9、iography. 25 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Metallic Material Domain. After inquiries and votes carried out in accordance with the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval for Publication.

10、 prEN 2954-002:20093 1 Scope This standard contains pictures of the macrostructure of bar, section, forging stock and forgings for titanium and titanium alloy wrought products. This standard shall be used in conjunction with EN 2954-1. 2 Normative references The following referenced documents are in

11、dispensable 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 2954-001, Aerospace series Macrostructure of titanium and titanium alloy wrought produc

12、ts Part 001: General requirements. 1)3 Macrographs All macrographs are shown at actual size (1 magnification) when printed without any magnification or reduction. See Annex A (normative). 1) Published as ASD Prestandard at the date of publication of this standard. prEN 2954-002:20094 Annex A (normat

13、ive) Atlas of macrographic references A.1 Macro grain size See Figure A.1 (2MA1 to 2MA6). 2)2MA1 Level 10 2) Additional indication from publication ETTC 3. prEN 2954-002:2009 5 2MA2 Level 20 prEN 2954-002:20096 2MA3 Level 30 prEN 2954-002:2009 7 2MA4 Level 40 prEN 2954-002:20098 2MA5 Level 50 prEN 2

14、954-002:2009 9 2MA6 Level 60 Figure A.1 prEN 2954-002:2009 10 A.2 Non-uniform macrostructure See Figure A.2 (2MA20 to 2MA25). 2)2MA20 prEN 2954-002:2009 11 2MA21 prEN 2954-002:2009 12 2MA22 prEN 2954-002:2009 13 2MA23 prEN 2954-002:200914 2MA24 prEN 2954-002:200915 2MA25 Figure A.2 prEN 2954-002:200

15、916 A.3 Tree-ring type structures See Figure A.3 (2MA40 to 2MA42). 2)2MA40 prEN 2954-002:200917 2MA41 and 2MA42 Figure A.3 prEN 2954-002:2009 18 A.4 Macro grain size for common alpha-beta forgings See Figure A.4 (2MA60 to 2MA62). 2MA60 2MA61 prEN 2954-002:2009 19 2MA62 Figure A.4 prEN 2954-002:2009

16、20 A.5 Macrostructure obscured by grain flow See Figure A.5 (2MA70). 2MA70 Figure A.5 prEN 2954-002:200921 A.6 Alpha segregates, alpha stringer or blocky alpha See Figure A.6 (2MA80 to 2MA84). 2)2MA80 Alpha segregates, alpha stringer prEN 2954-002:200922 2MA81 Alpha segregates, blocky alpha 2MA82 Alpha segregates, blocky alpha prEN 2954-002:2009 23 2MA83 Alpha segregates, blocky alpha 2MA84 Alpha segregates, blocky alpha prEN 2954-002:200924 A.7 Beta fleck See Figure A.7 (2MA100). 2MA100 prEN 2954-002:2009 25 Bibliography 1 AMS 2380, Approval and control of premium-quality titanium alloys.