NGHIÊN CỨU XÂY DỰNG CÔNG THỨC TÍNH NHIỆT ĐỘ BẮT ĐẦU CHUYỂN BIẾN MACTENXIT (MS) CHO THÉP THEO THÀNH PHẦN HÓA HỌC = RESEARCH SETTING FORMULA’S STARTING TEMPERATURE OF MARTENSITE TRANSFORMATION (MS) FOR STEEL BY CHEMICAL COMPOSITION

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Tác giả: Văn Cương Lê

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học công nghệ Giao thông vận tải, 2020

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 472278

Thêm vào giỏ

Bài báo nghiên cứu phương pháp và thực hiện xây dựng công thức thực nghiệm để tính toán một cách gần đúng nhiệt độ bắt đầu chuyển biến Mactenxit (MS) của thép theo thành phần hóa học thép trên cơ sở các số liệu thống kê và dáng điệu của đường cong thực nghiệm. Các kết quả nghiên cứu đã cho phép xác định được hệ số ảnh hưởng đến nhiệt độ bắt đầu chuyển biến MS của các nguyên tố hợp kim ở trong thép theo dáng điệu của các đường cong thực nghiệm. Với các hệ số đó đã xây dựng được hai công thức tính nhiệt độ bắt đầu chuyển biến MS với ảnh hưởng của nguyên tố hợp kim trong hai khoảng hàm lượng Cacbon khác nhau. Áp dụng các công thức này tính toán ứng dụng cho một số mác thép cụ thể cho thấy hoàn toàn phù hợp và có tính ứng dụng cao trong nhiều lĩnh vực từ nghiên cứu sản xuất thép cho tới xác định trạng thái thép sau nhiệt luyện cũng như tự động hóa quá trình nhiệt luyện. Theo kết quả nghiên cứu đã sử dụng công thức thực nghiệm để tính toán nhiệt độ chuyển biến MS cho một số nhóm thép cụ thể
từ đó xác định môi trường nguội phù hợp. The article researches the method and implements the formulation of an empirical formula to approximate the starting temperature of martensite transformation (MS) of steel according to the composition chemical of steel based on statistics and shape tone of experimental curves. The results of the study have allowed us to determine the coefficient that affects the starting temperature of the martensite transformation of alloy elements in steel in the shape of experimental curves. With these coefficients, we have formulated two formulas which calculated the start temperature martensite transformations with the effect of alloy elements in two different carbon content ranges. Applying these formulas calculates the application for a specific grade of steel that is perfectly suitable and highly applicable in many fields from steel production research to determine the state of steel after heat treatment like as automating the heat treatment process. According to the research results, the empirical formula was used to calculate the martensitic transformation temperature for some steel of groups
Since then determine the appropriate cooling environment.

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