Method for acquiring continuous heating translation of bulk amorphous alloy

Abstract

The invention belongs to the related technical field of connection of a bulk amorphous material and discloses a method for acquiring continuous heating translation of a bulk amorphous alloy. The method comprises the following steps: (1) using a laser point heat source to heat the bulk amorphous alloy to acquire a series of samples at different heating times and critical points of crystallization and decrystallization of the samples, thus acquiring a plurality of critical points; (2) acquiring the distance between the critical point and the corresponding laser point heat source through metallographic analysis, further simulating a thermal cycle curve of the critical point; (3) acquiring part of the continuous heating translation of the bulk amorphous alloy through a DSC (Differential Scanning Calorimetry) experiment, and further fitting with points of tangency of a plurality of thermal cycle curves and the continuous heating translation to obtain the continuous heating translation of the bulk amorphous alloy. The method can accurately acquire the continuous heating translation of the bulk amorphous alloy, guarantees the amorphous state of a welding joint, and is stronger in practicality.

Description

technical field [0001] The invention belongs to the technical field related to the connection of bulk amorphous materials, and more specifically relates to a method for obtaining a continuous heating phase transition curve of bulk amorphous alloys. Background technique [0002] Once the amorphous alloy appeared, it attracted the attention of many material application workers with its excellent performance. However, the limited size, difficulty in processing and poor weldability make amorphous alloys always stay on the concept of "great application potential or prospect". Although the bulk amorphous alloy has a relatively wide supercooled liquid phase region and strong amorphous forming ability, it solves the first two problems well, making the bulk amorphous alloy widely used in electronic products and sports equipment. Although it has been successfully applied, the connection of amorphous alloys is still a worldwide problem so far. [0003] Amorphous alloys are prone to c...

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Problems solved by technology

[0007] At present, the main method of researching the thermal characteristics of amorphous alloys is to use DSC thermal difference analysis method. The maximum heating rate of DSC is 500K / min. However, the critical heating rate required to maintain amorphous properties during the heating process of most amorphous alloys is greater than the value

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