ADVANCED MATERIALS & PROCESSES | JULY/AUGUST 2024 31 TABLE 3 — TENSILE PROPERTIES OF THIXOBLENDED Mg-Al-Zn ALLOYS Blended alloy Source alloy chips Yield strength, MPa Tensile strength, MPa Elongation, % AM70 Thixomolded AM60, AZ91 130 255 12 ZA65 TTMP AM60, AZ91, ZA 12/4 255 337 14 TABLE 4 — PROPERTIES OF THIXOMOLDED AJX810 Yield strength, MPa Ultimate tensile strength, MPa Elongation, % Minimum*creep rate, 10-10/sec Fatigue** strength, MPa, 108 cycles Corrosion*** fatigue strength, MPa, 108 cycles Corrosion*** rate, MCD 160 255 8 9.8 160 98 0.08 *150°C, 50 MPa, compare to AM60 at 2x10-7/sec, **Compare to AM60 at 70 MPa[4], ***In 3.5% salt environment TABLE 5 — TENSILE PROPERTIES OF ROLL BONDED THIXOMOLDED PLATES PRODUCED BY TTMP Composition Layers Yield Strength, MPa Tensile Strength, MPa Elongation, % AM60 5 224 276 6 AM60 3 225 312 24 AM60/320 mesh Stainless Steel 3 280 311 6 Fig. 3 — Effect of thermomechanical processing (TMP) on SEM micrographs and properties of thixomolded AZ61[1,3,4]. Thixomolded AZ61 Grain size: 5 microns Fatigue strength: 70 MPa Toughness: 16 MPa·m0.5 Texture: 1.8 MRD TTMP AZ61L Grain size: 2 microns Fatigue strength: 150 MPa Toughness: 28 MPa·m0.5 Texture: 3.5 MRD TMP
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