Amorphous Alloy Ribbon Embrittlement Evaluation via Pressurization Indentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for evaluating embrittlement in amorphous alloy ribbons, such as the tearing test, are limited in their ability to assess embrittlement in wider samples or those with complex shapes, and fail to provide detailed evaluation of embrittlement sites and distribution, especially when the ribbons are punched at narrow pitches or cut in directions different from the casting direction.
Innovation Solution
A method involving a pressurization member that forms indentation points on the amorphous alloy ribbon, with evaluation based on the number and distribution of cracks formed, using a test device that includes a measurement table and a pressurization means to apply pressure perpendicular to the ribbon, allowing for detailed assessment of embrittlement through crack detection and analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a tearing test is used to evaluate embrittlement of amorphous alloy ribbon, then embrittlement can be assessed in terms of cuttability, but the method is limited in evaluating embrittlement in wider samples or those with complex shapes and cannot provide detailed evaluation of embrittlement sites and distribution
Solution Approach 1:
The evaluation method segments the continuous ribbon into multiple discrete test pieces at regular intervals along the casting direction. Each test piece is independently evaluated for embrittlement, allowing detailed assessment of embrittlement distribution across the entire ribbon length while accommodating various ribbon widths and shapes
Solution Approach 2:
The invention extends the evaluation from a single-point or limited-area assessment to a two-dimensional distribution map by evaluating multiple test pieces across the ribbon width and length. This dimensional expansion provides comprehensive embrittlement site and distribution information that was previously unattainable with conventional tearing tests
2Adaptability or versatility
If the amorphous alloy ribbon is punched at narrow pitches or cut in directions different from the casting direction, then complex shapes can be produced, but conventional evaluation methods fail to provide detailed embrittlement assessment
Solution Approach 1:
The embrittlement evaluation is performed on the as-cast ribbon before secondary processing such as punching or cutting. This preliminary assessment identifies embrittlement sites and distribution patterns in advance, allowing optimization of subsequent processing parameters to avoid brittle regions and prevent defects in the final complex-shaped products
Solution Approach 2:
The evaluation method accommodates variable processing parameters including different punching pitches, cutting directions, and ribbon dimensions by evaluating multiple test pieces across the entire ribbon surface. This parameter flexibility ensures accurate embrittlement assessment regardless of the specific processing conditions applied to produce complex shapes
Data Source
AI summary
A new method for evaluating embrittlement of an amorphous alloy ribbon is provided. The method includes: pressing a pressurization member from one side to a plurality of positions of an amorphous alloy ribbon; scattering, in the amorphous alloy ribbon, pressurization portions where the pressurization member is pressed to form indentation; and evaluating embrittlement by the number or distribution of pressurization portions where cracks have occurred.