7沉没的最终原因 沉没的最终原因这艘偌大的游轮究竟为什么会沉于海底呢?由于技术上的原因,直至 这艘偌大的游轮究竟为什么会沉于海底呢 由于技术上的原因,直至1991年。科学考察队 由于技术上的原因 年 才开始到水下对残骸进行考察,并收集了残骸的金属碎片供科研用。这些碎片以及沉船 才开始到水下对残骸进行考察,并收集了残骸的金属碎片供科研用。 在海底的状况使人们终于解开了巨轮“泰坦尼克号”罹难之谜。 在海底的状况使人们终于解开了巨轮“泰坦尼克号”罹难之谜。考察队员们发现了导致 泰坦尼克号”沉没重要细节造船工程师只考虑到要增加钢的强度. “泰坦尼克号”沉没重要细节造船工程师只考虑到要增加钢的强度.而没有想到要增加 其韧性。把残骸的金属碎片与如今的造船钢材作一对比试验,发现在“泰坦尼克号” 其韧性。把残骸的金属碎片与如今的造船钢材作一对比试验,发现在“泰坦尼克号”沉 没地点的水温中,如今的造船钢材在受到撞击时可弯成V形 没地点的水温中,如今的造船钢材在受到撞击时可弯成 形,而残骸上的钢材则因韧性不 够而很快断裂。由此发现了钢材的冷脆性,即在-40℃ ℃的温度下, 够而很快断裂。由此发现了钢材的冷脆性,即在 ℃~0℃的温度下,钢材的力学行为由 韧性变成脆性,从而导致灾难性的脆性断裂。而用现代技术炼的钢只有在—70℃一— 韧性变成脆性,从而导致灾难性的脆性断裂。而用现代技术炼的钢只有在 ℃ 60℃的温度下才会变脆。不过不能责怪当时的工程师,因为当时谁也不知道,为了增加 ℃的温度下才会变脆。不过不能责怪当时的工程师,因为当时谁也不知道, 钢的强度而往炼钢原料中增加大量硫化物会大大增加钢的脆性,以致酿成了“ 钢的强度而往炼钢原料中增加大量硫化物会大大增加钢的脆性,以致酿成了“泰坦尼克 沉没的悲剧。 号”沉没的悲剧。Large cruise ship why on earth would sink to the seabed? Due to technical reasons, until 1991. Scientific expedition team began to water of debris were investigated, and gathered the remains of metal fragments for scienti
fic purposes. These fragments and wrecks at the bottom of the situation so that people finally solved the ship" Titanic" death mystery. Explorers discovered the cause of" Titanic" sinking important details of shipbuilding engineer only take into account the need to increase the strength of the steel. But no thought to increase its toughness. The wreckage of the metal fragments and the shipbuilding steel makes a comparison test, found in the" Titanic" sunken place water temperature, the shipbuilding steel subjected to impact can be bent into a V shape, and the wreckage was not enough steel toughness and quickly broken. The discovery of steel cold brittleness, in - 40 degrees to 0 DEG C, steel mechanical behavior by toughness becomes brittle, resulting in catastrophic brittle fracture. But with modern technology refined steel only in 70 degrees 60 degrees temperature will become brittle. But don't blame the engineers, because at that time who do not know, in order to increase the strength of the steel and steelmaking raw materials in increasing amounts of sulfides can greatly increase the brittleness of steel, thus causing the" Titanic" sunken tragedy.
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