金属学报  1977, Vol. 13 Issue (3): 149-235

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15Mn26Al4低温钢的研究

叶基石

AN INVESTIGATION OF 15Mn26Al4 LOW-TEMPERATURE STEEL

Yeh Chi-shih

叶基石. 15Mn26Al4低温钢的研究[J]. 金属学报, 1977, 13(3): 149-235.
. AN INVESTIGATION OF 15Mn26Al4 LOW-TEMPERATURE STEEL[J]. Acta Metall Sin, 1977, 13(3): 149-235.

摘要 参考文献 相关文章 Metrics 全文: PDF(1479 KB)   摘要: 在早期比较系统地研究铁-锰-铝系合金钢的基础上,发展了一种完全不含镍、铬的低温用新钢种——15Mn26Al4.它具有十分稳定的奥氏体组织,满意的力学性能,可在液氢温度下使用而不变脆。对照以前研究的Fe-Mn-Al系相图,考虑到铝有抑制高锰奥氏钢发生低温马氏体型相变和稳定低温组织的作用,以及锰和碳是稳定奥氏体的合金元素,通过实验确定钢的成分范围为(％):C 0.13—0.19,Mn 24.5—27.0,Al 3.8—4.7.与一般常用的1Crl8Ni9Ti不锈钢相比,15Mn26Al4钢的强度、塑性和冲击韧性等,均有显著的优越性。 在工业生产实践中,研究出“钢温高、渣温高、模温高”和“浇注快”的“三高一快”的炼钢经验;研究出压力加工工艺必须掌握750一850℃和1150—1250℃间有两个塑性区的规津,已成批生产出各种规格的板、管、棒、丝材和锻件;还研究出不同规格的焊条和焊剂,从而形成了一整套比较完整的加工工艺。 15Mn26Al4钢经制成容器在液氮温度下进行爆破试验,情况良好,表现为明显的塑性断口,是典型的韧性断裂。 Abstract：On the basis of our past research on Fe-Mn-Al system, a new Ni-Cr-free cryogenicnon-magnetic steel-15Mn26Al4 has been developed. The steel shows stable austen-ite structure and satisfactory mechanical properties. It may be used for temperaturesas low as that of liquid hydrogen without incurring embrittlement. From our own work on Fe-Mn-Al phase diagram, since aluminum can suppressmartensite type transformation of high manganse austenite steels at low temperaturesand considering that both carbon and manganese promote the stabilization of the austen-ite structure, it is deduced that the chemical composition of the above steel should bein the narrow range of C 0.13-0.19％, Mn 24.5-27.0％ and Al 3.8-4.7％. Such a steelpossesses excellent ductility and impact properties together with higher strength ascompared with that of the conventional 18-8 austenitic stainless steels, although itsrustresisting property is relatively poor. The production of such steel calls for special attention, it is advised to stick to theso-called "3-high and 1-fast" practice, i. e. high smelting temperatures, high slag temper-atures and high mould temperatures with fast teeming. In hot working practice, it hasbeen found that there appeared two regions with high plasticity, 750-850℃ and 1150-1250℃. The 15Mn26Al4 steel has been successfuly fabricated into the sheets, plates, bars,wires, tubes and forgings. At the same time, suitable welding rods coated with properfluxes of different specifications have been developed. Explosion tests to failure at liquid nitrogen temperature of vessels made of 15Mn26Al4 steel were carried out, the broken vessel showed complete plastic dimple fracture,testifying that such a steel is suitable for low temperature uses. 收稿日期: 1977-03-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 叶基石 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1977/V13/I3/149 [1] 张彦生、师昌绪,金属学报,7(196们),285． [2] 张彦生、师昌绪、李有柯,金属学报,8 (1965) ,346． [3] Holden, H. et al., J. Iron Steel Inst., London, 209 (1971) , 721．0 No related articles found! Viewed Full text Abstract Cited   Shared      Discussed