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Non-destructive method for determining crystallinity in amorphous alloys

A technique for alloying and crystallinity, which is used in the non-destructive field of determining crystallinity in amorphous alloys, and can solve problems such as measuring the destructiveness of samples

Inactive Publication Date: 2017-02-15
CRUCIBLE INTPROP LLC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, all these existing techniques are destructive to the measurement sample

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  • Non-destructive method for determining crystallinity in amorphous alloys
  • Non-destructive method for determining crystallinity in amorphous alloys
  • Non-destructive method for determining crystallinity in amorphous alloys

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[0016] phase state

[0017] The term "phase" here may refer to that which is found in a thermodynamic phase diagram. A phase state is a region of space (eg, a thermodynamic system) in which all physical properties of a material are substantially uniform everywhere. Examples of physical properties include density, refractive index, chemical composition, and lattice periodicity. A simple description is that a phase state is a region of a material that is chemically homogeneous, physically distinct and / or mechanically separable. For example, in a system of ice and water in a glass jar, the ice cube is one phase, the water is the second phase, and the moist air above the water is the third phase. The glass of the jar is another separate phase. The phase state may refer to a solid solution, which may be a binary, ternary, quaternary or higher solution, or may be a compound, such as an intermetallic compound. As another example, an amorphous phase is different from a crystalline...

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Abstract

One embodiment provides a method of determining an unknown degree of crystallinity, the method comprising: constructing a master graph comprising a plurality of reference curves, each reference curve representing a plurality of reference curves having a certain chemical composition and various predetermined degrees of crystallinity the relationship between the resistivity of one of the alloy samples and the temperature; for the alloy sample having the chemical composition and the unknown degree of crystallinity, obtaining a curve representing its resistivity versus temperature; and by comparing the curve with the master graph Determine the unknown degree of crystallinity.

Description

[0001] All publications, patents and patent applications cited in this specification are hereby incorporated by reference in their entirety. Background technique [0002] Most of the metal alloys in use today are - at least initially - processed by solidification casting. The metal alloy is melted and cast into a metal or ceramic mold where it solidifies. The mold is stripped and the cast metal part is ready for use or further processing. The as-cast structure of most materials produced during solidification and cooling depends on the cooling rate. There are no general rules for the nature of the difference, but for the most part the structure just changes gradually with the cooling rate. On the other hand, for bulk solidifying amorphous alloys, the change between the amorphous state produced by relatively rapid cooling and the crystalline state produced by relatively slow cooling is one of kind rather than degree— The two states have distinct properties. [0003] Bulk sol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/14G01N33/20G01N33/38
CPCG01N33/386G01N27/14G01N33/204
Inventor S·P·扎德斯基C·D·普雷斯特T·A·瓦尼乌克
Owner CRUCIBLE INTPROP LLC