|
US$229.00 ยท In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 15749-2008: Measuring method in quantitative metallography
Status: Valid GB/T 15749: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 15749-2008 | English | 229 |
Add to Cart
|
3 days [Need to translate]
|
Measuring method in quantitative metallography
| Valid |
GB/T 15749-2008
|
| GB/T 15749-1995 | English | 399 |
Add to Cart
|
3 days [Need to translate]
|
Manual measuring method in quantitative metallography
| Obsolete |
GB/T 15749-1995
|
PDF similar to GB/T 15749-2008
Basic data | Standard ID | GB/T 15749-2008 (GB/T15749-2008) | | Description (Translated English) | Measuring method in quantitative metallography | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H24 | | Classification of International Standard | 77.040.30 | | Word Count Estimation | 10,113 | | Date of Issue | 2008-10-20 | | Date of Implementation | 2009-04-01 | | Older Standard (superseded by this standard) | GB/T 15749-1995 | | Quoted Standard | GB/T 13298 | | Regulation (derived from) | National Standard Approval Announcement 2008 No.17 (Total No.130) | | 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 number of points with a grid method, grid cut line method, microscope eyepiece micrometer assay, segment scale assays and image analyzer determination of the volume fraction of the phase method. This standard applies to all types of alloy microstructure measured phase volume fraction. | GB/T 15749-2008: Measuring method in quantitative metallography---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.
Measuring method in quantitative metallography
ICS 77.040.30
H24
National Standards of People's Republic of China
Replacing GB/T 15749-1995
Determination of quantitative metallography
Posted 2008-10-20
2009-04-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard replaces GB/T 15749-1995 "quantitative metallography manual measurement method."
This standard compared with GB/T 15749-1995, the main changes are as follows.
--- Changing the name of the standard;
--- Increasing the preface, test report, Appendix A "phase diagram form of reference" and Appendix B "measurement reference map";
--- Increased scale segment assay, an image analyzer method;
--- Remove the basic principles and Appendix A "Measurement Example";
--- The increase or decrease of the terminology.
Appendix A of this standard and Appendix B is an informative annex.
The standard proposed by China Shipbuilding Industry Corporation.
This standard by the National Standardization Technical Committee of marine vessels marine materials application technology at the Technical Committee.
This standard was drafted. China Shipbuilding Industry Corporation seventh twenty-five Institute, Guangzhou Shipyard International Co., Ltd.
The main drafters of this standard. Guo Haixia, Tonghui Rong, Li Xuefeng, Yang Yong.
This standard supersedes the release of case.
--- GB/T 15749-1995.
Determination of quantitative metallography
1 Scope
This standard specifies the number of points with the grid method, the grid line transect method, a microscope eyepiece micrometer assay, assay and line scale image analyzer
The method was used to determine the percentage of phase volume.
This standard applies to all types of alloy microstructure phase measurement volume percent.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 13298 metal microstructure inspection method
3 Terms, definitions and symbols
3.1 Terms and Definitions
The following terms and definitions apply to this standard.
3.1.1
The image characteristic parameter or a two-dimensional cross-sectional plane of projection recovery (or deduction) three-dimensional image morphology of science.
3.1.2
According to stereological principles, measurements and calculated by the two-dimensional metallographic sample grinding surface of the parameters to determine the three-dimensional phase space volume percent.
3.1.3
According to the critical value of the color image is converted to only two binary images.
3.2 Symbol
The following symbols apply to this standard.
AA --- analyte relative area%;
L --- certain angle measuring segment length, in millimeters (mm);
LL --- analyte phase line,%;
L1 ~ L8 --- a certain angle is measured relative to the line was cutting the segment length, in millimeters (mm);
PP --- analyte phase points,%;
Vp V --- analyte phase volume%.
4 Determination
4.1 General
4.1.1 swap formula STEREOLOGY see equation (1).
Vp V = AA = LL = PP (1)
4.1.2 Cut samples taken and prepared according to GB/T 13298 with the relevant provisions will be.
4.1.3 magnification should be chosen in order to clearly distinguish the boundary morphology and phase analyte prevail, on this basis, select a lower multiples.
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 15749-2008_English be delivered?Answer: Upon your order, we will start to translate GB/T 15749-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GB/T 15749-2008_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 15749-2008_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay. Question 5: Should I purchase the latest version GB/T 15749-2008?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 15749-2008 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.
|