Rolling tuning microstructure and tensile properties of nano/microcrystalline 304 stainless steel
Rolling tuning microstructure and tensile properties of nano/microcrystalline 304 stainless steel
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纳米/微晶304不锈钢的轧制调谐显微组织和拉伸性能
DOI：
10.1142/s0217984919503445
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发表时间：
2019-10
影响因子：
1.9
通讯作者：
Li Zhengning
中科院分区：
文献类型：
--
作者：
Shi Yu;La Peiqing;Han Yijun;Wei Fuan;Sheng Jie;Li Zhengning
本文研究了轧制参数对铝热反应铸造纳米晶/微晶 304 不锈钢 (SS) 显微组织和拉伸性能的影响。结果发现，在 700[公式：见正文]C 和 900[公式：见正文]C 轧制的 304 SS 中，大部分纳米晶奥氏体长大并转变为亚微晶。而纳米晶/微晶结构在900[公式：见正文]C下轧制，变形量为40%，随后在600[公式：见正文]C下轧制，厚度减少70%，微晶奥氏体晶粒分布均匀。与铸态 304 SS 钢相比，各种轧制 304 SS 钢的强度和延展性均得到提高。在900[式：见文字]C下轧制、变形量为80%的钢的均匀伸长率高达31.3%，几乎与相应粗晶粒钢的延展性水平相同。 700[式：见正文]C下变形80%的轧制钢材达到最大的抗拉强度，但伸长率最小。该样品在 900[公式：见正文]C 下进行两步轧制，厚度减少 40%，然后在 600[公式：见正文]C 下进行两步轧制，厚度减少 70%，获得了令人满意的强度和延展性组合。优化的纳米晶/微晶结构和分布导致屈服强度和延伸率分别为 767 MPa 和 22.8%。
The effect of rolling parameters on microstructure and tensile properties of nanocrystalline/microcrystalline 304 stainless steel (SS) casted by the aluminothermic reaction was investigated in this work. It was found that majority of the nanocrystalline austenite of the 304 SS rolled at 700[Formula: see text]C and 900[Formula: see text]C grew up and transformed to sub-microcrystalline. While the nanocrystalline/microcrystalline structure still retained rolled at 900[Formula: see text]C with 40% deformation followed 600[Formula: see text]C with 70% thickness reduction, and microcrystalline austenite grains distributed evenly. The strength and ductility of the various rolled 304 SS were improved compared with the as-casted 304 SS steel. The steel rolled at 900[Formula: see text]C with 80% deformation exhibited a uniform elongation as large as 31.3%, which is almost the same ductility level of counterpart coarse-grained steel. The rolled steel at 700[Formula: see text]C with 80% deformation achieved the maximum tensile strength but the smallest elongation. The sample, two-step rolled at 900[Formula: see text]C with 40% thickness reduction and then 600[Formula: see text]C with 70% thickness reduction, yielded the satisfactory combination of strength and ductility. The yield strength and elongation were appropriate 767 MPa and 22.8%, respectively, which resulted from the optimized nanocrystalline/microcrystalline structure and distribution.
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影响因子：
9.4
作者：
S. Chowdhury;Samar K. Das;P. De
通讯作者：
S. Chowdhury;Samar K. Das;P. De
DOI：
10.1007/bf02673673
发表时间：
1975
期刊：
Metallurgical Transactions A
影响因子：
--
作者：
V. Rao;D. Taplin;P. Rao
通讯作者：
V. Rao;D. Taplin;P. Rao
影响因子：
9.4
作者：
Nakada, Nobuo;Ito, Hidetoshi;Takaki, Setsuo
通讯作者：
Takaki, Setsuo
影响因子：
9.4
作者：
Zhang, HW;Hei, ZK;Lu, K
通讯作者：
Lu, K
梯度结构中的背应力强化和应变硬化
影响因子：
8.3
作者：
Yang, Muxin;Pan, Yue;Wu, Xiaolei
通讯作者：
Wu, Xiaolei