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GB/T 14999.3-2012: Test methods for superalloys -- Part 3: Verification of longitudinal fracture of bars
Status: Valid GB/T 14999.3: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 14999.3-2012 | English | 279 |
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Test methods for superalloys -- Part 3: Verification of longitudinal fracture of bars
| Valid |
GB/T 14999.3-2012
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| GB/T 14999.3-1994 | English | 199 |
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Methods of longitudinal fracture test for heat-resisting superalloy bars
| Obsolete |
GB/T 14999.3-1994
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PDF similar to GB/T 14999.3-2012
Basic data | Standard ID | GB/T 14999.3-2012 (GB/T14999.3-2012) | | Description (Translated English) | Test methods for superalloys -- Part 3: Verification of longitudinal fracture of bars | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H24 | | Classification of International Standard | 77.140.99 | | Word Count Estimation | 12,112 | | Older Standard (superseded by this standard) | GB/T 14999.3-1994; GB/T 14999.5-1994 | | Regulation (derived from) | National Standards Bulletin No. 28 of 2012 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the use of comparative law, qualified limit Pictures fracture porosity and fracture method stratified assessment methods. This section applies to a diameter of not less than 16 mm hot-rolled bars wrought superalloy layered fracture | GB/T 14999.3-2012: Test methods for superalloys -- Part 3: Verification of longitudinal fracture of bars
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS77.140.99
H24
National Standards of People's Republic of China
Replacing GB/T 14999.3-1994
Partially replace GB/T 14999.5-1994
Superalloys Test methods - Part 3.
Bar longitudinal fracture test
Testmethodsforsuperaloys-Part 3. Verificationoflongitudinal
fractureofbars
Issued on. 2013-05-01 2012-11-05 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 14999 "Test Method for High Temperature Alloy" is divided into six parts.
--- Part 1. Portrait of macrostructure and defect acid leaching test;
--- Part 2. horizontal macrostructure and defect acid leaching test;
--- Part 3. longitudinal fracture test bars;
--- Part 4. Rolling superalloy strips the grain structure and a carbide distribution measurement;
--- Part 6. Wrought superalloys double the grain structure and a carbide distribution measurement method;
--- Part 7. high-temperature alloy castings grain size, dendrite arm spacing and a loose microscopic measurement method.
This is Part 3 GB/T 14999 in.
Rules in this section in accordance with GB/T 1.1-2009 given draft.
This Part replaces GB/T 14999.3-1994 "superalloy bars of longitudinal fracture test" and GB/T 14999.5-1994 "high temperature
Alloy low magnification, high power rating organization Standard Atlas "in Chapter 2," superalloy bars longitudinal fracture rating map. "
This section compared with GB/T 14999.3-1994, the main changes are as follows.
--- Increasing the "Introduction", "range", "Terms and Definitions", "measurement methods and results indicate", "inspection report" and other technical content (see para.
Chapter 1, Chapter 2, Chapter 4, Chapter 5);
--- Increase the relevant technical requirements limit eligibility image method (see 4.1.1.2 and 4.1.2.2);
--- The "high-temperature alloy rods rating longitudinal fracture map" was changed to "longitudinal fracture loose standards diagrams" and "vertical fracture stratified Review
Level map "(see Appendix A and Appendix B, Chapter 2 GB/T 14999.5-1994's).
This part is proposed by the China Iron and Steel Association.
This part of the National Steel Standardization Technical Committee (SAC/TC183) centralized.
This part mainly drafted by. Dongbei Special Steel Group Co., Ltd., Steel Research Institute, Metallurgical Industry Information Standards Institute.
The main drafters of this section. Wu Guilin, Yuan Ying, Luan Yan, Chen Qing new, wear strong, Zhuangjing Yun, Wang Zhigang, strong valley.
This part of the standard replaces the release case history.
--- GB/T 14999.3-1994;
--- GB/T 14999.5-1994.
Introduction
This section provides a picture basically the original geometry based on real photos, do not involve specific technical conditions of the alloy.
This section as a recommended test method applies only to three-dimensional longitudinal fracture test, is not suitable for two-dimensional plane (cross section) longitudinal fracture
Test. It can not be determined subject superalloys lateral macrostructure and defect whether to accept or use the appropriate range.
Superalloys Test methods - Part 3.
Bar longitudinal fracture test
1 Scope
This section GB/T 14999 requirements using comparative law, law on eligibility limit pictures fracture porosity and fracture assessment stratified
method.
This section applies to not less than 16mm diameter hot rolled bars wrought superalloy layered fracture porosity and fracture testing, other types of
Bar fracture test may refer to execution.
2 Terms and definitions
The following terms and definitions apply to this document.
2.1
Loose shrinkage
Since the organization is not sufficient feeding liquid alloy formed less dense defects. Longitudinal stripes organization presented on the fracture, wherein the strip
Grain or strip remains obvious metallic luster with a granular structure, and does not destroy the continuity of defect Alloy.
2.2
Hierarchical stratification
Presented on the fracture gray, yellow or brown-black strip, the strip without a metallic sheen and granular structure and undermine continuous Alloy
Of defects.
Stratified into three common.
a) by a secondary reduction of external and slag caused stratified;
b) by a stratified porosity and subcutaneous injection ingot during cold caused by random distribution, but always from one side of the defect to the surface gradually
Heart extension;
c) Small stratified by the secondary oxidation of small linear inclusions caused by the fracture surface material located.
3 Sample preparation and cut
3.1 cut
Interception location and number of samples 3.1.1 shall be specified in the relevant product standard or technical conditions.
3.1.2 should be cut using a sample taken does not change the material structure of the method, the subject should be noted that the removal of surface processing methods (such as thermal cutting, punching or
Saw impact crushed, hammering cut off, etc.). Allow the sample size on the surface quality or substandard products from.
3.1.3 Sample thickness longitudinal fracture is.
a) when the diameter not less than 16mm ~ 32mm, a thickness of 10mm ± 2mm;
B) When a diameter greater than 32mm, a thickness of 14mm ± 2mm.
3.2 Preparation
3.2.1 Sample according to the corresponding technical requirements specified in the heat treatment process after treatment grooved.
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