US2019300984A1PendingUtilityA1

Method Of Producing Magnesium Alloy And Magnesium Alloy

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Assignee: SANKYO TATEYAMA INCPriority: Dec 16, 2016Filed: Jun 17, 2019Published: Oct 3, 2019
Est. expiryDec 16, 2036(~10.4 yrs left)· nominal 20-yr term from priority
Inventors:Yasunobu MatsumotoAkira NakagawaMasayoshi OgawaNaoto SakaiKazunori Shimizu
C22C 1/02B22D 21/007C22C 23/02B21C 23/002B21C 23/00
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Claims

Abstract

and controlling to have a desired decomposition rate.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A method of producing a magnesium alloy characterized by adding:
 7.8 to 9.2% by weight of Al,   0.20 to 0.80% by weight of Zn,   0.12 to 0.40% by weight of Mn, and   an amount Y [ppm] calculated by formulas provided below, of Ni,   (1) when the decomposition rate X is lower than 500 mg/cm 2 /day,
     Y= 48.385 Ln( X )−119.64  (Formula 1)
 
   (2) when the decomposition rate X is 500 or higher but lower than 1400 mg/cm 2 /day,
     Y= 63.818 exp(0.0032 X )  (Formula 2)
 
   
       and
 controlling to have a desired decomposition rate. 
 
     
     
         2 . A magnesium alloy controlled to have a desired decomposition rate, characterized by comprising:
 7.8 to 9.2% by weight of Al,   0.20 to 0.80% by weight of Zn,   0.12 to 0.40% by weight of Mn, and   an amount Y [ppm] calculated by formulas provided below, of Ni,   (1) when the decomposition rate X is lower than 500 mg/cm 2 /day,
     Y= 48.385 Ln( X )−119.64  (Formula 1)
 
   (2) When the decomposition rate X is 500 or higher but lower than 1400 mg/cm 2 /day,
     Y= 63.818 exp(0.0032 X )  (Formula 2).

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