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合川金屬成品HIC檢測氫致開裂試驗

信息編號:63937736 發(fā)布時間:2025/8/15 10:29:16
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!
氫致開裂分類(氫脆和氫腐蝕)
1)氫脆:各種情況下產生的氫原子直接滲透到鋼內部后,使鋼晶粒間原子結合力降低,造成鋼材的延伸性、端面收縮率降低,強度也發(fā)生變化。在裂紋有與陽極反應相應的陰極反應發(fā)生。所生成的氫或加工氫進入鋼中引起氫致開裂。
2)氫腐蝕:氫與鋼中的碳化物發(fā)生反應產生甲烷,甲烷氣體不能從鋼中擴散出去,聚集在晶粒間形成局部高壓,造成應力集中,進而使鋼材產生微裂紋或鼓泡。
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