Method for comparing contents of interstitial atoms of metal materials
A technology of interstitial atoms and metal materials, which is applied in the direction of applying stable tension/pressure to test the strength of materials, which can solve the problems of complicated operation, long test period, time-consuming and labor-intensive, etc.
Active Publication Date: 2013-06-12
SHANXI TAIGANG STAINLESS STEEL CO LTD
View PDF1 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
On the whole, these methods are complicated to operate, time-consuming and labor-intensive, and the test period is long, and the influence of interstitial atoms on the mechanical properties of materials cannot be obtained from this.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0024] TP310S (American ASTM A213-04 standard) is a typical heat-resistant stainless steel material.
[0025] Due to its high content of Cr and Ni elements and good high temperature corrosion resistance, it is widely used in thermal power boilers. However, due to its low high temperature creep resistance, tube burst accidents often occur. In order to improve its high-temperature creep resistance, an appropriate amount of Nb and N elements are added to its basic components to produce a second phase strengthening dominated by Z-phase CrNbN, forming a new steel grade TP310HCbN (US ASTM A213-04 standard). However, it is difficult to judge whether the added N element will partially affect the "intrinsic high temperature creep strength" of the material in the form of solid solution strengthening. In this embodiment, TP310S is used as a reference material, and TP310HCbN is used as a test material.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a method for comparing contents of interstitial atoms of metal materials. The method comprises the following steps of: I, respectively selecting Q groups of reference material samples and test material samples; II, selecting one of the Q groups of reference material samples and test material samples to respectively carry out a tension test, determining yield strengths and tensile strengths of the reference material samples and the test material samples, and calculating a yield strength arithmetic mean value and a tensile strength arithmetic mean value of the yield strengths and the tensile strengths of the reference material samples and the test material samples; III, for the residual Q-1 groups of reference material samples and test material samples, applying the same pre-tension FH parameter to each reference material sample, and applying the same pre-tension FH test to each test material sample; IV, carrying out sudden loading on each group of reference material sample and test material sample in the step III, and calculating a true strain arithmetic mean value of each reference material sample and a true strain arithmetic mean value of each test material sample; and V, qualitatively judging whether the contents of interstitial atoms of materials are high or not according to all values during testing. The method for comparing the contents of the interstitial atoms of the metal materials, disclosed by the invention, is simple and convenient to operate.
Description
technical field [0001] The invention belongs to the field of physical testing methods, and relates to a testing method for qualitatively comparing metal materials, especially steel interstitial atom content. Background technique [0002] In the scientific research and production practice of metal materials, the purpose of controlling the properties of materials is often achieved by changing the content of interstitial atoms. For example, in order to stamp deep-drawn containers such as stainless steel pots and pans that are used daily in the home, it is necessary to make the stainless steel plate have excellent deep-drawing properties, and failure behaviors such as cracking cannot occur during the stamping process. This requires strict control of the carbon and nitrogen content, the level and quantity of inclusions, and the microstructure of the material during the production of the steel plate. Among them, the content of carbon and nitrogen as interstitial atoms has a signi...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08
Inventor 董盼
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD