Nội dung được dịch bởi AI, chỉ mang tính chất tham khảo
Đặc điểm tính chất mài mòn của vật liệu phân lớp chức năng được lắng đọng trên gang bằng công nghệ sản xuất phụ gia hỗ trợ bằng laser
Tóm tắt
Trong nghiên cứu này, vật liệu phân lớp chức năng (FGM) đã được lắng đọng trên bề mặt gang bằng công nghệ sản xuất phụ gia hỗ trợ bằng laser (LAAM). Hợp kim siêu bền Inconel 625 đã được lắng đọng trên bề mặt như một lớp đệm, sau đó các lớp thép không gỉ 420 (SS420) được chuẩn bị. Vấn đề nứt đã được loại bỏ thành công trong các vật liệu được lắng đọng. Với các tham số quy trình tối ưu, FGM có độ dày lên tới 4,0 mm đã được đạt được mà không có nứt và các khuyết tật rõ ràng khác. Các lớp SS420 cho thấy cấu trúc vi thể dendritic mịn phát triển từ tốc độ làm nguội nhanh của quy trình LAAM. Kết quả thử nghiệm độ mài mòn cho thấy FGM có khả năng chống mài mòn tuyệt vời, đặc biệt là trong điều kiện bôi trơn.
Từ khóa
#vật liệu phân lớp chức năng #sản xuất phụ gia hỗ trợ bằng laser #gang #Inconel #mài mòn #thép không gỉTài liệu tham khảo
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