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GB/T 34483-2017 English PDF

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GB/T 34483-2017: β transus temperature determination methods of zirconium and zirconium alloys
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Basic data

Standard ID GB/T 34483-2017 (GB/T34483-2017)
Description (Translated English) �� transus temperature determination methods of zirconium and zirconium alloys
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H14
Classification of International Standard 77.040.99
Word Count Estimation 14,137
Date of Issue 2017-10-14
Date of Implementation 2018-05-01
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

GB/T 34483-2017: β transus temperature determination methods of zirconium and zirconium alloys

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β transus temperature determination methods of zirconium and zirconium alloys ICS 77.040.99 H14 National Standards of People's Republic of China Determination of β phase transformation temperature of zirconium and zirconium alloys 2017-10-14 Published 2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by China Nonferrous Metals Industry Association. This standard by the National Non-ferrous Metal Standardization Technical Committee (SAC/TC243) centralized. This standard was drafted unit. Baoji Titanium Group Co., Ltd., Baoji Titanium Co., Ltd., the National Nuclear Titanium Zirconium Corp., the western metal Materials Co., Ltd., Northwest Nonferrous Metal Research Institute, West New Zirconium Core Materials Technology Co., Ltd. Shaanxi billion invasive Titanium Zirconium Detection Co., Ltd. Color Metal Technology Economic Research Institute. The main drafters of this standard.Wen Wen, Li Jian, Feng Junning, Peng Sheng, Mu Danning, White House, Wang Songmao, Ma Hongzheng, Li Xiao, Tian Hang, Zhang Lei, Tong Longgang, Wu Yanhua. Determination of β phase transformation temperature of zirconium and zirconium alloys

1 Scope

This standard specifies the metallographic method for determination of zirconium and zirconium alloy β-phase transition temperature of the method and determine the conditions. This standard applies to the determination of zirconium and zirconium alloy Tα/α β and T β transition temperature.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. Determination of effective heating zone for heat treatment furnaces GB/T 9452-2012 GB/T 13298 metal microstructure test method GB/T 15749 quantitative metallographic determination GB/T 18876.1 Application of automatic image analysis of steel and other metals in the microstructure, inclusions content and level of the standard test Methods - Part 1. Image analysis and stereology of inclusions or secondary phases in steel and other metals

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Lower β phase transition temperature lowerβtransustemperature α to α β phase transition temperature of zirconium and zirconium alloys in the heating process began to appear when the corresponding β-phase temperature, with Tα/α β said. 3.2 Upper β phase transition temperature upperβtransustemperature α β to β phase transition temperature Zirconium and zirconium alloys in the heating process is completely converted to the minimum temperature β phase, with T β said.

4 principle

Zirconium and zirconium alloys with the heating temperature will occur allotrope transformation, the first phase from α to α β phase, at a higher temperature End All into the β phase. The method is to determine Tα/αβ and Tβ by observing the microstructure of the sample at the quenching temperature.

5 sampling requirements

5.1 Sampling location and requirements 5.1.1 ingot melting furnace number should be Tα/α β and T β transition temperature determination. Samples can be taken from extrusion billets, bar billets, forgings and slabs Intermediate blanks and plates, rods, tubes and other processed products. 5.1.2 The original structure of the sample blank should be as uniform as possible. 5.2 Sample 5.2.1 Cut the sample, the cooling method should be used to ensure that the sample does not produce deformation and overheating. The sample should be a more regular diameter

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