Which material do you think has had brittle fracture? Explain how a material has

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Which material do you think has had brittle fracture? Explain how a material has had brittle or ductile failure based on the table

Strength (Tensile) Fracture, Ultimate Coefficient Strain Strength, le Fracture Number Material Condition MPa (kpsi) MPa (kpsi) MPa (kpsi) MPa (kpsi) Exponent m Strain ef 5 Ur 628 (91.1) 898 (130 729 (106) 2380 (345) 2340 (340) 1520 (221) Annealed 341 (49.5) 220 (32.0) 358 (52.0) 193 (28.0) 1520 (220) 1720 (250) 241 (35.0) 620 (90.0) 992 (144) 758 (110) 1880 (273) 1760 (255)t 1410 (205) 2 Annealed 1212 1045 424 (61.5) 1580 (230) 1930 (210) 601 (87.3) Steel 0.041 Q&T; 600°F Q&T; 600°F Annealed 1 0.048 Stainless steel Stainless steel Aluminum 276 (40.0) 169 (24.5) 296 (43.0) 542 (78.6) 568 (82.4) 324 (47.0) 446 (64.8) 1600 (233) 325 (47.2) 533 (77.3)1 706 (102) 1270 (185) 620 (90) 689 (100) 882 (128) 0 4 Aluminum 0 7075 Aluminum T6 593 (86.0) 0

Explanation / Answer

Brittle or Ductile failure depends upon the value of 'm' i.e. strain strength exponent.

Higher the value of m more will be the chance of Ductile failure and Lower the value of m the more will be brittle failure.

Therefore 1045 Steel and 4142 steel will have brittle failure

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