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GB/T 4296-2022: Inspection method for microstructure of wrought magnesium alloy
Status: Valid GB/T 4296: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 4296-2022 | English | 519 |
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Inspection method for microstructure of wrought magnesium alloy
| Valid |
GB/T 4296-2022
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| GB/T 4296-2004 | English | 639 |
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Inspection method for microstructure of wrought magnesium alloy
| Obsolete |
GB/T 4296-2004
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| GB/T 4296-1984 | English | 199 |
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Magnesium alloy wrought products--Microstructure--Inspection method
| Obsolete |
GB/T 4296-1984
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PDF similar to GB/T 4296-2022
Basic data | Standard ID | GB/T 4296-2022 (GB/T4296-2022) | | Description (Translated English) | Inspection method for microstructure of wrought magnesium alloy | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H61 | | Word Count Estimation | 26,294 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 4296-2022: Inspection method for microstructure of wrought magnesium alloy---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.
Inspection method for microstructure of wrought magnesium alloy
ICS 77.120.20
CCSH61
National Standards of People's Republic of China
Replacing GB/T 4296-2004
Microstructure test method of wrought magnesium alloy
Published on 2022-03-09
2022-10-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
drafted.
This document replaces GB/T 4296-2004 "Microstructure Inspection Method of Wrought Magnesium Alloys". Compared with GB/T 4296-2004, except for
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) The terms and definitions of "grain size" and "G value" are deleted (see Chapter 2 of the.2004 edition);
b) Added the types of etchants (see Table 1);
c) Added the applicable test for etchants (see Table 2);
d) The requirements for the inspection surface of the sample are added (see 5.3);
e) The requirements for specimen polishing have been added (see 5.6);
f) Changed the requirements for rough throwing (see 5.7.1, 3.5.1 of the.2004 edition);
g) Changed the requirements for fine throwing (see 5.7.2, 3.5.2 of the.2004 edition);
h) Changed the requirements for fine polishing (see 5.7.3, 3.5.3 of the.2004 edition);
i) Added optical microstructure pictures of typical products (see 7.2);
j) Added scanning electron microscope tissue observation pictures (see 7.3).
Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents.
This document is proposed by China Nonferrous Metals Industry Association.
This document is under the jurisdiction of the National Nonferrous Metals Standardization Technical Committee (SAC/TC243).
This document is drafted by. Northeast Light Alloy Co., Ltd., Shanghai Jiaotong University, Zibo Deyuan Metal Materials Co., Ltd., Nonferrous Metals
Technology and Economic Research Institute Co., Ltd., Fujian Institute of Technology, Shanxi Yinguang Huasheng Magnesium Co., Ltd., Zhengzhou Qingyan Alloy Technology Co., Ltd.
Co., Ltd., Kunming Metallurgical Research Institute, Shandong Yinguang Yuyuan Light Metal Precision Forming Co., Ltd., Zhongshan Jaguar Special Materials Technology Co., Ltd.,
Shaanxi Environmental Science Research Institute, Youyan Engineering Technology Research Institute Co., Ltd., National Quality Supervision and Inspection Center for Magnesium and Magnesium Alloy Products, Dongguan
City Mei'an Medical Equipment Co., Ltd.
The main drafters of this document. Ma Yue, Lv Xinyu, Wang Yingxin, Liu Chenguang, Zhang Jingyang, Lin Guanglei, He Wenxiu, Li Weili, Liu Jinxue, Li Xinbin,
Jia Ning, Li Heng, Sun Xinxin, Du Liang, Zhang Jing, Liu Xue, Song Yang, Sun Zhaoqian, Fan Yuxian, Wang Qing, Qian Yafeng, Li Yanfang.
This document was first published in 1984, and was revised for the first time in.2004.This is the second revision.
Microstructure test method of wrought magnesium alloy
Caution - Persons using this document should have practical experience in formal laboratory work. This document does not address all possible security issues
question. It is the user's responsibility to take appropriate safety and health measures and to ensure compliance with the conditions stipulated by relevant national regulations.
1 Scope
This document specifies the test solution, sample preparation, sample etching, microstructure inspection, and grain size determination of wrought magnesium alloys.
Methods and test report content.
This document is applicable to the inspection of the microstructure of wrought magnesium alloy ingots (or ingots) and processed products.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document.
GB/T 8170-2008 Numerical Rounding Rules and Representation and Judgment of Limit Values
3 Terms and Definitions
There are no terms and definitions that need to be defined in this document.
4 Test solution
The test solution and preparation method are shown in Table 1.
Table 1 Test solution and preparation method
Serial number name ingredients (preparation method)
1 polishing liquid
Glycerol (ρ1.261g/mL), hydrochloric acid (ρ1.19g/mL), nitric acid (ρ1.40g/mL), acetic acid (ρ1.049g/mL) were mixed with
20.2.3.5 by volume, mix well
2 Etchant No. 1
Weigh 1g of oxalic acid in a container, add 150mL of distilled water (or deionized water), 1mL of nitric acid (ρ1.40g/mL),
1mL acetic acid (ρ1.049g/mL)
3 Etchant No. 2
Weigh 3 g of trinitrophenol (picric acid) into a container, add 20 mL of distilled water (or deionized water), 50 mL of anhydrous ethyl acetate in turn.
Alcohol (ρ0.789g/mL), 20mL acetic acid (ρ1.049g/mL)
4 Etching agent No. 3 Mix nitric acid (ρ1.40g/mL) and anhydrous ethanol (ρ0.789g/mL) in a volume of 1.19, and mix well.
5 Etchant No. 4
Weigh 0.5g of oxalic acid in a container, add 97mL of distilled water (or deionized water), 1mL of nitric acid (ρ1.40g/mL),
1mL acetic acid (ρ1.049g/mL)
6 Etchant No. 5 Weigh 2g of oxalic acid in a container, add 100mL of distilled water (or deionized water)
Etchant No. 6
(thin film etchant)
Weigh 6g picric acid in a container, add 1mL distilled water (or deionized water), 100mL absolute ethanol (ρ0.789g/mL),
2mL acetic acid (ρ1.049g/mL), 0.5mL phosphoric acid (ρ1.70g/mL)
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