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科学家攻克金属稳定性难题
在金属的世界里,一直存在着一个“不可能三角”:强度、塑性和使用过程中的稳定性。这3种特性往往难以兼得,而金属材料在循环载荷下的疲劳失效更是威胁工程安全的隐形杀手。无论是航空发动机涡轮叶片每秒承受的上万次高温高压冲击,还是跨海大桥主缆需要承担的百万吨级动态荷载,都亟须相关研究突破金属材料的抗循环蠕变瓶颈。
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