کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5455950 | 1514653 | 2017 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of ultra-refine grain and micro-nano twins on mechanical properties of 51CrV4 spring steel
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effects of ultra-refine grain and micro-nano twins on mechanical properties of 51CrV4 spring steel Effects of ultra-refine grain and micro-nano twins on mechanical properties of 51CrV4 spring steel](/preview/png/5455950.png)
چکیده انگلیسی
The cyclic quenching with both the rapid heating and cooling was applied on 51CrV4 spring steels by a DIL805A/D dilatometer. The microstructures were observed by a scanning electron microscope (SEM) and a transmission electron microscope (TEM), whereas the strengthening mechanism of the test steels was discussed by the general equation of Rp0.2i=Ï0+ÎÏpi+ÎÏri+ÎÏTi. The results demonstrated that the grain size was the lowest with only 1.76 µm, the area fraction of the twins was the highest up to 6.78% and the thickness of the twins was fined to 11.71 nm at six times. Also, an excellent comprehensive performance was obtained, such as the yield strength, the tensile strength and the area reduction of the test steels was increased substantially as the cyclic quenching was conducted from 1 to 6 times, where the maximum values were up to 1792.93 MPa, 2036.2 MPa and 44%, respectively. As a result, the strength increase was mainly attributed to the ultra-refine grain formation, the area fraction increase of the micro-nano scale twins and the size refinement decrease; whereas it was observed that the highest contribution to the strength and ductility was from the micro-nano scale twins.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 690, 6 April 2017, Pages 225-232
Journal: Materials Science and Engineering: A - Volume 690, 6 April 2017, Pages 225-232
نویسندگان
Z.F. Luo, Y.L. Liang, S.L. Long, Y. Jiang, Z.L. Wu,