有色金属
有色金屬
유색금속
NONFERROUS METALS
2010年
1期
14-16,34
,共4页
金属材料%纯净钢%微合金化%La
金屬材料%純淨鋼%微閤金化%La
금속재료%순정강%미합금화%La
metal material%pure steel%micro alloying%La
研究稀土微合金化纯净钢中稀土的作用.采用离子光谱分析和无水电解液低温电解法测定试验钢中的固溶稀土含量,利用扫描电镜和能谱仪分别观察和测定钢中夹杂物的形貌和成分,用金相显微镜观察钢的淬火组织,并用WAW-Y500电液伺服材料试验机测试热处理后试样的拉伸性能.结果表明,稀土在纯净钢中仍有净化钢液、变质夹杂的作用.纯净钢中稀土的固溶度可达10~(-5)～10~(-4)数量级,固溶的稀土影响了纯净钢淬火组织,细化了晶粒,提高了纯净钢的拉伸性能.
研究稀土微閤金化純淨鋼中稀土的作用.採用離子光譜分析和無水電解液低溫電解法測定試驗鋼中的固溶稀土含量,利用掃描電鏡和能譜儀分彆觀察和測定鋼中夾雜物的形貌和成分,用金相顯微鏡觀察鋼的淬火組織,併用WAW-Y500電液伺服材料試驗機測試熱處理後試樣的拉伸性能.結果錶明,稀土在純淨鋼中仍有淨化鋼液、變質夾雜的作用.純淨鋼中稀土的固溶度可達10~(-5)～10~(-4)數量級,固溶的稀土影響瞭純淨鋼淬火組織,細化瞭晶粒,提高瞭純淨鋼的拉伸性能.
연구희토미합금화순정강중희토적작용.채용리자광보분석화무수전해액저온전해법측정시험강중적고용희토함량,이용소묘전경화능보의분별관찰화측정강중협잡물적형모화성분,용금상현미경관찰강적쉬화조직,병용WAW-Y500전액사복재료시험궤측시열처리후시양적랍신성능.결과표명,희토재순정강중잉유정화강액、변질협잡적작용.순정강중희토적고용도가체10~(-5)～10~(-4)수량급,고용적희토영향료순정강쉬화조직,세화료정립,제고료순정강적랍신성능.
The effect of RE in pure steel is investigated. The solid solution RE in tested steel is determined with Ion Spectra analysis and anhydrous electrolyte low temperature electrolysis. The inclusion morphology and constituents are observed and determined by SEM and Energy spectrum, respectively. The quenched microstructure of purity steel is observed by using Metallographic microscope, and the strengthening performance of the heat treated pure steel is tested by the WAW-Y500 material test machine. The results show that in pure steel with extra-low dross element, rare earth plays a role of purifying the molten steel and controlling inclusion morphology. The mount of RE in pure steel in solid solution is in the order of 10~(-5) to 10~(-4). The quenched microstructure and mechanical performance of the purity steel is improved by RE addition and the grain is refined.
