ASTM B909-00(2006)

Standard Guide for Plane Strain Fracture Toughness Testing of Non-Stress Relieved Aluminum Products

SCOPE
1.1 This guide covers supplementary guidelines for plane-strain fracture toughness testing of aluminum products for which complete stress relief is not practicable. Guidelines for recognizing when residual stresses may be significantly biasing test results are presented, as well as methods for minimizing the effects of residual stress during testing. This guide also provides guidelines for correction and interpretation of data produced during the testing of these products. Test Method E 399 is the standard test method to be used for plane-strain fracture toughness testing of aluminum alloys.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-Aug-2006
• ICS: 77.150.99 - Other products of non-ferrous metals
• Technical Committee: B07 - Light Metals and Alloys
• Drafting Committee: B07.05 - Testing

Relations

• Replaces: ASTM B909-00 - Standard Guide for Plane Strain Fracture Toughness Testing of Non-Stress Relieved Aluminum Products
• Effective Date: 01-Sep-2006
• Replaced By: ASTM B909-00(2011) - Standard Guide for Plane Strain Fracture Toughness Testing of Non-Stress Relieved Aluminum Products
• Effective Date: 01-Nov-2011
• Referred By: ASTM E399-23 - Standard Test Method for Linear-Elastic Plane-Strain Fracture Toughness of Metallic Materials
• Effective Date: 01-Sep-2006
• Referred By: ASTM F3122-14(2022) - Standard Guide for Evaluating Mechanical Properties of Metal Materials Made via Additive Manufacturing Processes
• Effective Date: 01-Sep-2006

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:B909–00 (Reapproved 2006)
Standard Guide for
Plane Strain Fracture Toughness Testing of Non-Stress
1
Relieved Aluminum Products
This standard is issued under the fixed designation B909; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
1.1 This guide covers supplementary guidelines for plane- 3.1 Definitions—Terminology in Test Method E399 and
strain fracture toughness testing of aluminum products for Terminology E1823 are applicable herein.
which complete stress relief is not practicable. Guidelines for 3.2 Definitions of Terms Specific to This Standard:
recognizingwhenresidualstressesmaybesignificantlybiasing 3.2.1 corrected plane-strain fracture toughness— a test
test results are presented, as well as methods for minimizing result, designated K (corrected), which has been corrected for
q
the effects of residual stress during testing. This guide also residual stress bias by one of the methods outlined in this
provides guidelines for correction and interpretation of data guide.ThecorrectedresultisanestimationoftheK orK that
q Ic
produced during the testing of these products. Test Method would have been obtained in a residual stress free specimen.
E399 is the standard test method to be used for plane-strain The corrected result may be obtained from a test record which
fracture toughness testing of aluminum alloys. yielded either an invalid K or valid K , but for which there is
q Ic
1.2 This standard does not purport to address all of the evidence that significant residual stress is present in the test
safety concerns, if any, associated with its use. It is the coupon.
responsibility of the user of this standard to establish appro- 3.2.2 invalid plane-strain fracture toughness— a test result,
priate safety and health practices and determine the applica- designated K , that does not meet one or more validity
q
bility of regulatory limitations prior to use. requirements in Test Method E399 or ISO 12737 and may or
may not be significantly influenced by residual stress.
2. Referenced Documents
3.2.3 valid plane-strain fracture toughness— a test result,
2
2.1 ASTM Standards:
designated K , meeting the validity requirements in Test
Ic
E399 Test Method for Linear-Elastic Plane-Strain Fracture
Method E399 or ISO 12737 that may or may not be signifi-
Toughness K of Metallic Materials cantly influenced by residual stress.
Ic
E561 Test Method for K-R Curve Determination
4. Significance and Use
E1823 Terminology Relating to Fatigue and Fracture Test-
ing 4.1 The property K , determined by Test Method E399 or
Ic
2.2 ANSI Standard: ISO 12737, characterizes a material’s resistance to fracture in
ANSI H35.1 Alloy and Temper Designations for Alumi- a neutral environment and in the presence of a sharp crack
3
num subjected to an applied opening force or moment within a field
2.3 ISO Standard: of high constraint to lateral plastic flow (plane strain condi-
ISO 12737 Metallic Materials–Determination of Plane tion).AK value is considered to be a lower limiting value of
Ic
4
Strain Fracture Toughness fracture toughness associated with the plane strain state.
4.1.1 Thermal quenching processes used with precipitation
hardened aluminum alloy products can introduce significant
1
This guide is under the jurisdiction ofASTM Committee B07 on Light Metals
residual stresses in the product. Mechanical stress relief pro-
and Alloys and is the direct responsibility of Subcommittee B07.05 on Testing.
cedures (stretching, compression) are commonly used to re-
Current edition approved Sept. 1, 2006. Published September 2006. Originally
approved in 2000. Last previous edition approved in 2000 as B909 – 00. DOI:
lieve these residual stresses in products with simple shapes.
10.1520/B0909-00R06.
However, in the case of mill products with thick cross-sections
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
(for example, heavy gage plate or large hand forgings) or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on complex shapes (for example, closed die forgings, complex
the ASTM website.
open die forgings, stepped extrusions, castings), complete
3
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
mechanical stress relief is not always possible. In other
4th Floor, New York, NY 10036, http://www.ansi.org.
4
instances residual stresses may be unintentionally introduced
Available from International Organization for Standardization (ISO), 1 rue de
Varembé, Case postale 56
...