The following are the specific steps for analyzing brittle phases using X-ray Diffraction (XRD):

Sample Preparation

 

Sample Collection: Select representative parts from the NVF550 steel plate containing brittle phases for sampling. Ensure that the samples can reflect the true state of the material and include sufficient areas of brittle phases.

Grinding Treatment: Gradually grind the collected samples into fine powder using grinding tools. During the grinding process, take care to avoid sample contamination. Tools such as agate mortars can be used, and the grinding should be continued until the particle size reaches the micron level to ensure that X-rays can fully interact with the crystals in the sample and obtain good diffraction effects.

Instrument Parameter Setting

 

Selecting an Appropriate X-ray Source: Based on the properties of the sample and the analysis requirements, select an appropriate target material to generate X-rays, such as Cu target, Co target, etc. Different target materials produce X-rays with different wavelengths, which will affect the position and intensity of the diffraction peaks.

Determining the Scanning Range and Step Size: Generally, for metallic materials, the scanning range can be set between 20° and 100°, and the step size is usually between 0.02° and 0.1°. The specific scanning range and step size can be appropriately adjusted according to the characteristics of the sample and the expected positions of the brittle phase diffraction peaks to ensure that all possible diffraction peaks can be completely captured.

Setting the Tube Voltage and Tube Current: The magnitudes of the tube voltage and tube current will affect the intensity and penetration ability of X-rays. Generally, the tube voltage can be set between 30 kV and 60 kV, and the tube current can be set between 20 mA and 50 mA. Optimization should be carried out according to the specific instrument and sample conditions to obtain a diffraction signal with sufficient intensity and stability.

 

 

 

 

 

NV D550 extra high general strength property
Grade		Mechanical Property			Charpy V Impact Test
	Thickness	Yield	Tensile	Elongation	Degree	Energy 1	Energy 2
NV D550	mm	Min Mpa	Mpa	Min %	-20	J	J
	t≤50	550	670-830	16%		37	55
	50＜t≤70	550	670-830	16%		37	55
	70＜t≤150	550	670-830	16%		37	55

 

 

 

 

 

 

 

 

 

 

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