...特征分为：弯曲、扭曲、冲击、疲劳 未到破坏强度，形变而失去承载能力（屈服、屈曲） （2）断裂和韧性( fracture and toughness) 断裂是主要破坏形式，韧性是材料抵抗断裂的能力。
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然而现在，一种新型的钢已经被开发出来，它可以在更低的温度下抵抗断裂，同时保持其强度和韧性，而不需要昂贵的添加剂。
Now, though, a novel type of steel has been developed that resists fractures at much lower temperatures, while retaining its strength and toughness—without the need for expensive additives.
Agnarsson解释道，结实意味着它可以在断裂前吸收能量，是强度和韧性完美结合的产物。
"' Tough 'means the ability to absorb energy before breaking, and results from a combination of strength and elasticity," Agnarsson explained.
MIM制造是理想，要求接近全密度、高冲击韧性、高断裂韧性、耐疲劳和耐腐蚀性。
MIM fabrication is ideal where near-full density, high impact toughness, fracture toughness, and fatigue and corrosion resistance are required.
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