文章信息/Info

Title:

Study on Solid Solution Technology and Microstructure of QBe2 Beryllium Bronze Alloy

文章編號:

1674-3962(2022)03-0237-04

作者:

岳麗娟1; 2; 王艷婷1; 趙紅運(yùn)1; 饒曉方2; 王泓3

（1. 寧夏中色新材料有限公司，寧夏 石嘴山 753000） (2. 西北稀有金屬材料研究院寧夏有限公司 稀有金屬特種材料國家重點(diǎn)實(shí)驗(yàn)室，寧夏 石嘴山 753000) (3. 西北工業(yè)大學(xué)材料學(xué)院，陜西 西安 710072）

Author(s):

YUE Lijuan1; 2;  WANG Yanting1;  ZHAO Hongyun1;  RAO Xiaofang2;  WANG Hong3

(1. CNMC Ningxia New Materials Co., Ltd., Shizuishan 753000, China) (2. State Key Laboratory of Special Rare Metal Materials, Northwest Rare Metal Materials Research Institute Ningxia Co., Ltd., Shizuishan 753000, China) (3. School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China)

關(guān)鍵詞:

鈹青銅; 固溶; 微結(jié)構(gòu); 塑性; 電性能

Keywords:

beryllium bronze;  solution treatment;  microstructure;  plasticity;  electrical property

分類號:

TB31;TG15

DOI:

10.7502/j.issn.1674-3962.202005006

文獻(xiàn)標(biāo)志碼:

A

摘要:

為了研究固溶保溫時間對QBe2鈹青銅合金組織性能的影響規(guī)律，對QBe2鈹青銅合金進(jìn)行790 ℃固溶處理，保溫時間為30~120 min，并在流動清水中快速冷卻以使富鈹相充分固溶于基體中，獲得可以產(chǎn)生沉淀強(qiáng)化的過飽和固溶體，分析了不同固溶保溫時間對合金力學(xué)性能、電性能及微觀組織的影響。結(jié)果表明，當(dāng)固溶保溫時間為60 min時，第二相能完全溶解到基體中；當(dāng)固溶保溫時間為90 min時，合金的力學(xué)性能完全滿足固溶態(tài)產(chǎn)品的要求；當(dāng)固溶保溫時間達(dá)到120 min時，合金的塑性最好。經(jīng)不同保溫時間固溶后的材料，其屈服強(qiáng)度與平均晶粒尺寸符合Hall-Petch關(guān)系。

Abstract:

In order to study the effect of solution holding time on the microstructure and properties of QBe2 beryllium bronze alloy, QBe2 beryllium bronze alloy was conducted by solution treatment under 790 ℃ for 30, 60, 90 and 120 min, then quenched with the flowing clean water in order to make the beryllium as rich phase fully dissolve in the matrix to obtain the supersaturated solid solution which can produce precipitation strengthening. The effects of different solution holding time on mechanical properties, electrical properties and microstructure of the alloy were also analyzed. The results show that the second phase can be completely dissolved into the matrix when the solution holding time is 60 min. When the solution holding time is 90 min, the mechanical properties of the alloy fully meet the requirements of the industrial products. When the solution holding time reaches 120 min, the plasticity of the alloy is the best. Besides, it also can be found that the yield strength and average grain size of the material after the different solution holding time are in accordance with the Hall-Petch relation.