GB/T 5168-2020 in English

VALID

Microstructure and macrostructure examination for titanium and titanium alloys

Issued on:2020-03-06
Implemented on:2021-02-01
File Format:PDF
Delivery:Via email within 5 business days

Price(USD)： $280.00
$272.00

Standard No:	GB/T 5168-2020
Document status:	VALID
Title in English:	Microstructure and macrostructure examination for titanium and titanium alloys
Title in Chinese:	钛及钛合金高低倍组织检验方法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 5 business days
Issued on:	2020-03-06
Implemented on:	2021-02-01
Superseding:	GB/T 5168-2008 Microstructure and macrostructure examination for α-β titanium alloys
Professional Classification:	GB-National Standard
Related Keywords:	titanium alloys introduction analysis titanium alloys β-type titanium alloy alloy classification treatment defect determination appendix a/b titanium
Related Topics:	Metallographic low magnification and high magnification high-throughput tissue Southern High-throughput Organization Titanium alloy English Titanium alloy English Tissue detection method 3 times the method detection limit Titanium slag inspection method titanium alloy english titanium alloy english double gold high magnification low magnification high and low Metallographic high magnification How to use high power lens How to use high power lens high power diffraction Metallographic high magnification Titanium and titanium alloy terminology and metallographic map high-throughput tissue low power Titanium detection method in steel organizational method How to use high power lens About the use of high power lens Test organization method Double pass detection low magnification high magnification metallography double inspection low magnification metallography High Times High 3 Triple the method detection limit Gold multiple sem high times low magnification metallography low magnification high magnification test high magnification method low magnification and metallography high magnification test low magnification test Beko Testing Double pass detection+ Low magnification metallographic examination Steel High Power Inspection Beida detection cryogenic tissue Metallographic low magnification Metallographic high magnification metallographic and low magnification low magnification method metallographic high magnification low magnification Fat titanium detection gb5168 high power stereopsis change to high magnification Low magnification detection High magnification detection crp is 5 times higher cryogenic tissue GBT5168 GB/T 5168-1985 GB/T 5168-2008 GB/T 5168-2020 organizational method titanium Titanium alloy Titanium and titanium alloys Low power tissue inspection How to use low power lens GB T 5168-2020 High and low magnification structural inspection methods for titanium and titanium alloys Low power field of view How to use high magnification lens Uniparental diploid detection method Titanium and titanium alloy hardness testing Titanium agent testing Titanium silicon inspection Titanyl sulfate test method Method for testing iron ions on titanium head Unorganized chlorine gas detection method Detect high magnification organizational segregation Detection methods for organized lead and its compounds Titanium alloy metallographic structure rating Titanium element detection method High power lens magnification adjustment method gb/t5168 Metal low magnification How to switch high power microscope Titanium and titanium alloy high and low magnification structure inspection method gb 5168

《GB/T 5168-2020钛及钛合金高低倍组织检验方法》由TC243（全国有色金属标准化技术委员会）归口，TC243SC3（全国有色金属标准化技术委员会稀有金属分会）执行，主管部门为中国有色金属工业协会。

Introduction

Analysis of the core content of the standard

Technical elements	2008 edition	2020 edition	Improvement points
Sample preparation	Basic requirements only	Added 6 new sample preparation methods such as electrolytic polishing	Adapt to different alloy states
Corrosion system	3 kinds of corrosive agents	6 low-magnification + 9 high-magnification corrosive agents	Refined alloy classification treatment
Defect determination	Appendix A/B	Added 4 types of defect maps (DF)	Improved determination basis

Key technology innovation

β spot inspection heat treatment specification: requires treatment at 15-30℃ below the β transition temperature, and clarifies the temperature control accuracy of ±5℃ compared to the old version to ensure the accuracy of organization display.

Primary α phase measurement: Added 4 quantitative detection methods such as intercept method and image analysis method, and the measurement error can be controlled within ±2%.

Implementation and application suggestions

For β-type titanium alloy, it is recommended to use 60mL H₂O₂+10mL HF+30mL H₂O corrosion system
When detecting the long strip α phase, the sampling ratio of the longitudinal section of the sample should be ≥70%
The electrolytic polishing parameters refer to YB/T4377, and the voltage is recommended to be 12-15V

Technology evolution analysis

This standard responds to the strict requirements of the aerospace field for the microstructure consistency of titanium alloys, through:

Introduction of 3D printed parts organization inspection specifications
Referencing the evaluation method of welding heat affected zone
Supplementing the digital image analysis process

More samples: JJG 21-2008 JC/T 2453-2018 GB 18306-2015

Sample only — not a preview of GB/T 5168-2020

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