http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107741452-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N27-64 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N27-64 |
| filingDate | 2017-09-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-107741452-B |
| titleOfInvention | method for testing volume fraction of martensite in austenitic stainless steel |
| abstract | The invention relates to the technical field of metallographic detection, and aims to provideA method for testing the volume fraction of martensite in austenitic stainless steel. The method comprises the following steps: placing the sample in a test environment box for hot hydrogen filling, discharging hydrogen while cooling, replacing the hydrogen with argon, heating the sample after vacuumizing, and keeping the temperature, wherein the real-time content of the hydrogen in the atmosphere environment is monitored all the time in the process. Integrating the real-time hydrogen content data monitored by the mass spectrometer with time, and calculating to obtain the total hydrogen release amount Q in the sample to be detected 1 (ii) a Repeating the operation with a pure austenite standard sample with the same material and size to obtain the total hydrogen release amount Q in the standard sample 2 (ii) a Calculating the volume fraction (Q) of martensite in the sample to be tested 2 ‑Q 1 )/Q 2 % of the amount of the compound (b). The testing device provided by the invention can be used for accurately measuring the integral martensite volume fraction in the austenitic stainless steel, and compared with the existing testing method, the testing device provided by the invention has the advantages that the obtained measurement data is more accurate, and the real condition of the sample can be reflected better. |
| priorityDate | 2017-09-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 18.