Method for measuring depth of alloy steel decarbonized layer

Abstract

The invention belongs to physico-chemical test technology, and relates to a method for measuring depth of an alloy steel decarbonized layer. In the invention, the method for measuring the depth of the alloy steel decarbonized layer is characterized in that an image signal output terminal of a scanning electron microscope is connected with an input terminal of an X-ray energy spectrometer, the scanning electron microscope is used for measurement and analysis; and the X-ray energy spectrometer is used for analysis and verification. The method comprises the following steps of firstly cutting a sample; carrying out surface treatment on the sample; cleaning the sample; subsequently placing the sample in the scanning electron microscope and vacuuming the scanning electron microscope; adjusting parameters of the scanning electron microscope and carrying out organization form analysis; subsequently collecting images to carrying out energy spectrum analysis at two sides of a measuring point at a half position of a transition area; verifying a carbon ingredient; and finally completing the measurement on the depth of the decarbonized layer. The method can carry out exact analysis on the depth of the alloy steel decarbonized layer, can be operated simply and conveniently, and can meet the requirement of practical scientific research production and failure analysis.

Description

technical field [0001] The invention belongs to physical and chemical testing technology, and relates to a method for measuring the depth of decarburization layer of alloy steel. Background technique [0002] In the detection process of alloy steel decarburization layer depth, GB / 224 and ISO3887 standards are mainly implemented. The standard only stipulates the general measurement method of decarburization layer, metallographic method, microhardness method, chemical method (chemical analysis and spectral analysis) . The metallographic method is intuitive and simple, but human error is large; the microhardness method has high accuracy, but the control of the depth of the decarburization layer is too strict; the chemical method (chemical analysis and spectral analysis) is theoretically feasible, but poor in operability and difficult to detect. The direct reading spectrometer has a large detection range and cannot achieve fixed-point detection. Contents of the invention [...

AI Technical Summary

Problems solved by technology

The metallographic method is intuitive and simple, but human error is large; the microhardness method has high accuracy, but the control of the depth of the decarburization layer is too strict; the chemical method (chemical analysis and spectral analysis) is theoretically feasible, but poor in operability and difficult to detect. The direct reading spectrometer has a large detection range and cannot achieve fixed-point detection