Polymer-like ultrahigh-strength metal alloy

Abstract

Disclosed in the present disclosure is a polymer-like ultrahigh-strength metal alloy, wherein the alloy has the following levels of strength and Young's modulus over a wide temperature range of 20° C. to 80° C. or −80° C. to 80° C.: a ultra-high yield strength σy of greater than or equal to 1 GPa, and a Young's modulus E of about 7-20 GPa. Thus, a novel polymer-like ultrahigh-strength metal alloy with a polymer-like ultralow Young's modulus is achieved in the present disclosure.

1 . A polymer-like ultrahigh-strength metal alloy, wherein, the alloy has the following levels of strength and Young's modulus over a wide temperature range of −80° C. to 80° C.:
 a ultra-high yield strength σ y  of greater than or equal to 1.3 GPa, and a Young's modulus E of about 10-16 GPa. 
 
     
     
         2 . The alloy according to  claim 1 , wherein the wide temperature range is selected to be in: an aviation ambient temperature range of −80° C. to 70° C. 
     
     
         3 . The alloy according to  claim 1 , wherein, the alloy comprises a strain glass matrix embedded with a small number of R and B19′ martensite seeds, i.e., martensite dual seeds. 
     
     
         4 . The alloy according to  claim 3 , wherein, the R martensite seeds have a size of 50-100 nm, P=3; and the B19′ martensite seeds have a size of 50-100 nm, P=2. 
     
     
         5 . The alloy according to  claim 1 , wherein, the ultra-high yield strength σ y  is about 1.8 GPa, and the Young's modulus E is about 16 GPa at −80° C.;
 the ultra-high yield strength σ y  is about 1.8 GPa, and the Young's modulus E is about 10 GPa at 20° C.; and 
 the ultra-high yield strength σ y  is about 1.8 GPa, and the Young's modulus E is about 15 GPa at 80° C. 
 
     
     
         6 . A polymer-like ultrahigh-strength metal alloy, wherein, the alloy has the following levels of strength and Young's modulus over a wide temperature range of −80° C. to 80° C.:
 a ultra-high yield strength σ y  of greater than or equal to 1 GPa, and 
 a Young's modulus E of about 7-20 GPa. 
 
     
     
         7 . The alloy according to  claim 6 , wherein, the ultra-high yield strength σ y  is greater than or equal to 1.2 GPa, and the Young's modulus E is about 7-9 GPa. 
     
     
         8 . The alloy according to  claim 6 , wherein, the ultra-high yield strength σ y  is about 1.2-1.8 GPa. 
     
     
         9 . The alloy according to  claim 6 , wherein, the ultra-high yield strength σ y  is about 1.8 GPa, and the Young's modulus E is about 11 GPa at 20° C. 
     
     
         10 . The alloy according to  claim 6 , wherein, the ultra-high yield strength σ y  is about 1.6 GPa, and the Young's modulus E is about 11 GPa at 20° C. 
     
     
         11 . The alloy according to  claim 6 , wherein, the ultra-high yield strength σ y  is about 1.3 GPa, and the Young's modulus E is about 10.5 GPa at 20° C. 
     
     
         12 . The alloy according to  claim 6 , wherein, the ultra-high yield strength σ y  is about 1.7-1.9 GPa, and the Young's modulus E is about 8-13 GPa at 20° C. 
     
     
         13 . The alloy according to  claim 6 , wherein, the ultra-high yield strength σ y  is about 1.2-1.3 GPa, and the Young's modulus E is about 9-13 GPa at 20° C. 
     
     
         14 . The alloy according to  claim 6 , wherein, the ultra-high yield strength σ y  is about 1.3-1.5 GPa, and the Young's modulus E is about 12-15 GPa at 80° C. 
     
     
         15 . The alloy according to  claim 6 , wherein, the ultra-high yield strength σ y  is about 1.3-1.5 GPa, and the Young's modulus E is about 9-11 GPa at 80° C. 
     
     
         16 . The alloy according to  claim 6 , wherein, the ultra-high yield strength σ y  is about 1.3 GPa, and the Young's modulus E is about 18 GPa at 20° C.;
 the ultra-high yield strength σ y  is about 1.3 GPa, and the Young's modulus E is about 9 GPa at 40° C.; 
 the ultra-high yield strength σ y  is about 1.3 GPa, and the Young's modulus E is about 9 GPa at 60° C.; 
 the ultra-high yield strength σ y  is about 1.3 GPa, and the Young's modulus E is about 10 GPa at 80° C.; 
 the ultra-high yield strength σ y  is about 1.3 GPa, and the Young's modulus E is about 13 GPa at 100° C.; and 
 the ultra-high yield strength σ y  is about 1.3 GPa, and the Young's modulus E is about 15 GPa at 120° C. 
 
     
     
         17 . The alloy according to  claim 6 , wherein, the ultra-high yield strength σ y  is about 1.3 GPa, and the Young's modulus E is about 7-10 GPa at 0° C. 
     
     
         18 . The alloy according to  claim 6 , wherein, the alloy has the following levels of strength and Young's modulus over a wide temperature range of 20° C. to 80° C.:
 the ultra-high yield strength σ y  is about 1.2 GPa, and the Young's modulus E is about 17-42 GPa at 20-80° C.; and 
 the alloy is an off dual-seed strain glass (off DS-STG) alloy. 
 
     
     
         19 . A method for manufacturing the alloy according to  claim 1 , comprising the steps of:
 forming deformation-stabilized martensites;   forming a dual-crossover strain glass (DC-STG) state; and   forming a dual-seed strain glass (DS-STG) state to obtain the alloy.   
     
     
         20 . The method according to  claim 19 , wherein, room temperature cold working is adopted when forming the deformation-stabilized martensites or forming the dual-seed strain glass (DS-STG) state; and heat treatment is adopted when forming the dual-crossover strain glass (DC-STG) state.