Non-heat treated magnesium alloy sheet with excellent formability at room temperature in which segregation is minimized

A magnesium alloy, maximum deviation technology, applied in the field of thin strip continuous casting magnesium alloy sheet, can solve the problems of casting defects, poor room temperature formability, low mechanical strength and so on

Inactive Publication Date: 2014-05-07
POSTECH ACAD IND FOUND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In summary, the present invention is devised to solve the problems of conventional magnesium alloys for twin-roll strip casting, such as casting defects, low mechanical strength, and poor room temperature formability, and an object of the present invention is to provide a Heat-treated magnesium alloy flakes, which can reduce casting defects such as segregation by adjusting the composition of magnesium alloys, and can obtain appropriate mechanical strength and good room temperature formability by controlling the microstructure of magnesium alloys, without containing expensive rare earths element

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  • Non-heat treated magnesium alloy sheet with excellent formability at room temperature in which segregation is minimized
  • Non-heat treated magnesium alloy sheet with excellent formability at room temperature in which segregation is minimized
  • Non-heat treated magnesium alloy sheet with excellent formability at room temperature in which segregation is minimized

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[0021] All the terms used in this specification are for describing the embodiments only, and are not intended to limit the present invention. As used in this specification and the appended claims, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. Unless the context clearly requires otherwise, throughout the specification and claims, the words "comprises" and "comprises" etc. should be read in an inclusive sense rather than an exclusive or exhaustive meaning, that is, should be read with "including but not limited to ".

[0022] The terms and words used in this specification and claims should not be interpreted as being limited to commonly used meanings or dictionary definitions, but should be interpreted as having meanings and concepts related to the technical scope of the present invention based on the following principles, according to Said principle, the inventor can appropriately define the concept of this term ...

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Abstract

The present invention relates to a non-heat treated magnesium alloy sheet which can substantially reduce casting defects such as center segregation and inverse segregation and has excellent formability when compared with a conventional commercial magnesium alloy sheet by controlling an alloy composition. The magnesium alloy sheet according to the invention comprises 1-3 wt% of Al, 0.5-3 wt% of Sn and the remaining amount of magnesium, and the difference of the mean value of Vickers hardness (Hv) caused by center segregation and inverse segregation is 10Hv or less.

Description

technical field [0001] The present invention relates to a strip cast magnesium alloy sheet, more particularly, to a non-heat-treatable magnesium alloy sheet capable of significantly reducing, for example, central segregation or inverse segregation by controlling the alloy composition. and other casting defects, and can use the precipitates formed in the rolling process to control the grain growth in the subsequent heat treatment process, thereby improving the room temperature formability. Background technique [0002] Magnesium alloy is an alloy for structural materials with low specific gravity, high specific strength and high rigidity, which has recently been increasingly used as a material for lightweight and portable electronic equipment such as mobile phones and notebook computers, or as a material for automobiles materials to improve fuel efficiency. However, research on magnesium alloys has been limited to casting parts. In particular, studies on improving the high-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00B22D21/04C22C23/02
CPCC22C23/00B22D11/001B22D11/0622C22F1/06C22C23/02B22D21/04
Inventor 金洛俊沈明植徐秉灿裴俊皓金东郁
Owner POSTECH ACAD IND FOUND
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