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武隆壓力容器HIC檢測氫致開裂試驗

信息編號:63937757 發布時間:2025/8/15 10:40:30
重慶科洋檢驗有限公司是一家依法成立并能夠承擔相應法律責任的第三方檢測中心。支持全國上門取貨、寄樣檢測,檢測周期短費用低,歡迎來電咨詢!
含有鉻、鎳的高強鋼對氫很敏感,碳含量較高的鋼氫致開裂的傾向更大,低碳鋼不易發生氫致開裂,組織致密的鍛件比組織疏松的鑄件更易發生氫致開裂。氫原子滲透到鋼內部以后,會降低晶粒間的原子結合力,使鋼材的韌性下降。
氫致開裂的斷口與其它脆性斷口很相似,高強材料容易出現沿晶斷口。對于低碳鋼,在沿晶的小刻面上容易出現細小的,發育不完整的韌窩,有人稱為“雞爪紋”。
氫脆斷口
氫致開裂具的滯后性,對于焊接構件,氫致開裂的發生具有突然性,會對人身和財產構成嚴重威脅,需要引起高度重視。
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