SIST EN 3114-001:2009

SLOVENSKI STANDARD
01-junij-2009
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Ta slovenski standard je istoveten z: EN 3114-001:2006
ICS:
49.025.10 Jekla Steels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 3114-001
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2006
ICS 49.025.10
English Version
Aerospace series - Test method - Microstructure of (α + ß)
titanium alloy wrought products - Part 001: General
requirements
Série aérospatiale - Méthode d'essai - Microstructure des Luft- und Raumfahrt - Prüfverfahren - Mikrogefüge
produits corroyés en alliage de titane (α + ß) - Partie 001 : Kneterzeugnisse von Titanlegierung (α + ß) - Teil 001:
Exigences générales Allgemeine Anforderungen
This European Standard was approved by CEN on 18 October 2006.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which 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 Central Secretariat or to any CEN member.

This European Standard 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, 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 and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3114-001:2006: E
worldwide for CEN national Members.

Contents Page
Foreword.3
Introduction .4
1 Scope .4
2 Normative references .4
3 Sampling.4
4 Preparation of the microsections.5
5 Assessment.7
6 Description of microstructures .7

Foreword
This document (EN 3114-001:2006) 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 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 latest by June 2007, and conflicting national standards shall be withdrawn at
the latest by June 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 Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, 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 and the United Kingdom.
Introduction
This standard is part of the series of EN metallic material standards for aerospace applications. The general
organization of this series is described in EN 4258.
1 Scope
This standard specifies the conditions for micrographic examination of (α + β) titanium alloy wrought products
and description of terms used.
Specific microstructures applicable to each type of product are defined in EN 3114-002 to EN 3114-004.
This standard shall be applied in conjunction with EN material standards, which define the acceptance criteria
unless otherwise specified on the order.
It is applicable to:
 bars, sections, forging stock and forgings (EN 3114-002);
 plate (EN 3114-003);
 sheet for superplastic forming (EN 3114-004).
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 3114-002, Aerospace series — Microstructure of (α + β) titanium alloy wrought products — Part 002:
Microstructure of bars, sections, forging stock and forgings.
EN 3114-003, Aerospace series — Microstructure of (α + β) titanium alloy wrought products — Part 003:
Microstructure of plate.
EN 3114-004, Aerospace series — Microstructure of (α + β) titanium alloy wrought products — Part 004:
Microstructure of sheet for superplastic forming.
EN 4258, Aerospace series — Metallic materials — General organization of standardization — Links between
types of EN standards and their use.
3 Sampling
The sampling and its frequency shall be as defined in the relevant technical specification and/or order.
The sampling sections shall be at least 10 mm, in thickness or length.
Samples shall preferably be taken by sawing. Cold work hardened zones shall be avoided or removed. If the
sampling material is taken by abrasive cut off or flame cutting, the resulting heat affected zone shall be
completely removed in the course of sample preparation.
4 Preparation of the microsections
4.1 General
The surface of the sample sections to be examined shall be prepared by machining and grinding and polishing
to ensure that the microstructure is clearly defined after etching.
In the case of electrolytic polishing, grinding may be omitted.
The method of preparation shall not change, contaminate or deform the surface microstructure.
4.2 Grinding
Resin bonded alumina, zirconia or silicon carbide paper shall be used for grinding. The pressure shall be as
low as possible in order to avoid any cold work hardening of the surface of the microsection.
4.3 Polishing
Polishing may be accomplished mechanically and/or electrolytically.
The following solution is recommended for electrolytic polishing:
 700 ml methanol;
 200 ml butylglycol;
 60
...