1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58alloys Part 009: Determination of surface contaminationThe European Standard EN 2003-009:2007 has t
2、he status of a British StandardICS 49.025.30Aerospace series Test methods Titanium and titanium BRITISH STANDARDBS EN 2003-009:2007BS EN 2003-009:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2007 BSI 2007ISBN 978 0 580 50530 0
3、Amendments issued since publicationAmd. No. Date CommentsThis publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations. National forewordThis
4、British Standard was published by BSI. It is the UK implementation of EN 2003-009:2007.The UK participation in its preparation was entrusted by Technical Committee ACE/61, Metallic materials for aerospace purposes, to Panel ACE/61/-/49, Titanium and its alloys.A list of organizations represented on
5、ACE/61/-/49 can be obtained on request to its secretary.EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 2003-009March 2007ICS 49.025.30English VersionAerospace series - Test methods - Titanium and titanium alloys -Part 009: Determination of surface contaminationSrie arospatiale - Mthodes dessais -
6、 Titane et alliagesde titane - Partie 009 : Dtermination de la contaminationde surfaceLuft- und Raumfahrt - Prfverfahren - Titan undTitanlegierungen - Teil 009: Bestimmung derOberflchenverunreinigungThis European Standard was approved by CEN on 5 October 2006.CEN members are bound to comply with the
7、 CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or
8、 to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versio
9、ns.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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,
10、 Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members
11、.Ref. No. EN 2003-009:2007: E2 Contents Page Foreword3 Introduction .4 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Principle4 5 Micrographic examination (Method A) 5 6 Hardness testing (Method B)5 7 Test report 6 Annex A (informative) Examples of contamination .7 EN 2003-009:2007
12、3 Foreword This document (EN 2003-009:2007) 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 Standard has received the approval of the National As
13、sociations 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 latest by September 2007, and conflicting national stan
14、dards shall be withdrawn at the latest by September 2007. 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 all such patent rights. According to the CEN/CENELEC
15、 Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembour
16、g, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 2003-009:20074 Introduction Contamination caused by an -stabilizer occurs in an environment containing oxygen, nitrogen or carbon when the product surface reaches a tem
17、perature which allows these elements to diffuse into the product surface. It leads to the formation of an -stabilized surface which is hard and brittle, seldom exceeding 0,2 mm and is detrimental to the product. 1 Scope This standard specifies two methods of determining surface contamination caused
18、by an -stabilizer on titanium and titanium alloys, for aerospace applications. 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 ref
19、erenced document (including any amendments) applies. EN 2002-7, Aerospace series Metallic materials Test methods Part 7: Hardness test. 1)EN 3114-001, Aerospace series Test method Microstructure of ( + ) titanium alloy wrought products Part 001: General requirements. 3 Terms and definitions For the
20、purposes of this document, the terms and definitions given in EN 3114-001 apply. 4 Principle Determination of surface contamination is carried out by: micrographic examination (Method A); or hardness testing (Method B). 1) Published as ASD Prestandard at the date of publication of this standard. EN
21、2003-009:20075 5 Micrographic examination (Method A) 5.1 Sampling Unless otherwise specified the product shall be sampled in the delivery condition, such that the product surface can be examined at its transverse section. The location of the sample shall be at the discretion of the manufacturer, unl
22、ess otherwise specified. The sampling procedure shall not result in any heating which may lead to a contamination of the test sample. 5.2 Procedure 5.2.1 Preparation of the micro-section The micro-section selected from the test sample shall be prepared by mechanical polishing. The method of preparat
23、ion shall not cause any damage to the microstructure. It shall lead to sharp edges. The micro-section shall be etched, using an appropriate solution e.g.: 2 % to 5 % HF (hydrofluoric acid); 40 % to 50 % 2-Propanol (isopropylalcohol); water. or 2 % to 5 % HF (hydrofluoric acid); 10 % to 20 % HNO3(nit
24、ric acid); water. 5.2.2 Micro-examination Optical micro-examination shall be carried out with a magnification of 100 times to 500 times. 5.3 Expression of results Report any appearance of a white layer or an area with a high density of light colour -phase (see annex), indicating the presence of surf
25、ace contamination. 6 Hardness testing (Method B) 6.1 Sampling See 5.1. EN 2003-009:20076 6.2 Procedure 6.2.1 Preparation of the specimen The section to be inspected shall be prepared by mechanical polishing. This preparation shall not cause any alteration. It shall lead to sharp edges. 6.2.2 Tests U
26、nless otherwise specified, Vickers hardness measurements shall be carried out under a load of 0,200 kg according to EN 2002-7 at the following locations: at least, three points at a distance 0,1 mm from the section surface; at least, three points at about mid-thickness of the section. The average va
27、lue of these measurements shall be calculated for each location. 6.3 Expression of results Report the difference between the two average values. A difference between these values 50 HV0,2, indicates surface contamination. 7 Test report The test report shall refer to this standard and shall include:
28、complete identification of the tested product, including the manufacturers name, designation and batch number; method used : micrographic examination (Method A) or hardness testing (Method B); location of test sample; method of test sample preparation; all relevant test sample dimensions; date of te
29、st and traceability to individuals performing the test work; equipment used; for micrographic examination (Method A) the etchant used; for hardness test (Method B), recorded individual and average hardnesses for the two test locations and the difference between the two averages; test results; any fa
30、ctor which may have affected the results and any deviation from the test method. EN 2003-009:20077 Annex A (informative) Examples of contamination EXAMPLE 1 (X 400) EXAMPLE 2 (X 250) EN 2003-009:2007BS EN BSI389 Chiswick High RoadLondonW4 4AL2003-009:2007BSI British Standards InstitutionBSI is the i
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