GB/T 14999.3-2012 English PDF

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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: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 14999.3-2012	279	Add to Cart	3 days	Test methods for superalloys -- Part 3: Verification of longitudinal fracture of bars	Valid
GB/T 14999.3-1994	199	Add to Cart	2 days	Methods of longitudinal fracture test for heat-resisting superalloy bars	Obsolete

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GB/T 13305   GB/T 13299   GB/T 15711   GB/T 14999.2   GB/T 14999.4   GB/T 14999.1   

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Older Standard (superseded by this standard): GB/T 14999.3-1994; GB/T 14999.5-1994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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