کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7176226 | 1466705 | 2018 | 43 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructural evolution and mechanical property development with nickel addition in low-carbon weld butt joints
ترجمه فارسی عنوان
تکامل میکرو سازمانی و توسعه اموال مکانیکی با افزودن نیکل در مفاصل ملتحمه با جوش کم کربن
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کلمات کلیدی
سیم جوشکاری، افزودن نیکل، ریز ساختار، ویژگی های مکانیکی، بسته های بسته بسته بسته شده بسته انتخاب گزینه،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
چکیده انگلیسی
Four metal powder flux-cored wires with added nickel (Ni) were designed to systematically investigate how Ni influences the microstructure and toughness in low-carbon bainitic weld metals (WMs). The microstructure was safely predicted by utilizing reasonable welding craft parameters (i.e., appropriate heat input and proper interpass temperature). Microstructural characterization, crystallographic analysis, microhardness mapping, fracture microparameter measurement, and finite element method calculations were all taken into account. This work showed that more martensite transformation occurs with increasing Ni and that the ductile-brittle transition temperature drops with added Ni. The boundaries with low-angle misorientation (i.e., less than 4°) enhance microhardness and the optimal inclusion size is in the range of 0.3-0.45â¯Î¼m, thus revealing the reasons for the resulting microhardness and toughness variations. In addition, the high-angle grain boundaries in close-packed plane packets effectually prevent cracks. From a practical perspective, 4â¯wt.% Ni could be the best design for welding wires in the present work. This work confirmed many of the results found in recently published literature. These results provide a reference for the composition design of welding wires and the processing method of WMs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 262, December 2018, Pages 638-649
Journal: Journal of Materials Processing Technology - Volume 262, December 2018, Pages 638-649
نویسندگان
Gaojun Mao, Rui Cao, Cyril Cayron, Roland Logé, Xili Guo, Yong Jiang, Jianhong Chen,