Transactions of Materials and Heat Treatment

Title：Influences of large deformation hot rolling process on microstructure and mechanical properties of KK1 aluminum bronze for construction

Authors：

Unit：

KeyWords：

ClassificationCode：TG146

year,vol(issue):pagenumber：2020,45(11):49-52

Abstract：

For KK1 aluminum bronze, the changes of microstructure and mechanical properties for alloy after large deformation hot rolling and aging treatment were analyzed. The results show that when the proportion of hot rolling reaches 70%, the original isometric α and β phases are transformed into very fine lamellar structures to obtain very fine alloy structure. After hot rolling treatment, the precipitated phase is formed in the sample structure. Then, at the temperature of 380 ℃, the aging structure forms a fuzzy interface between lamellar and fine β phases, which belongs to double-phase layer structure composed of (α+β) phase. However, in the microstructure of KK1 aluminum bronze, there are α and β phases and some k phases, and after hot rolling and aging treatment, the sample forms a similar diffraction peak. Thus, the aging process cannot change the structure of aluminum bronze. Furthermore, after the hot rolling deformation of KK1 aluminum bronze, the surface hardness increases significantly, the tensile strength also increases to 1095 MPa, and all the properties are improved. Finally, compared with aged sample, the hot rolled aluminum bronze achieves a higher strain hardening rate.

Funds：

国家自然科学基金资助项目（515092274）

秦春丽（1985-），女，硕士，讲师 E-mail：zhizihua2020@126.com

Reference：

[1]吕玉廷, 聂彬, 刘国浩, 等. 搅拌摩擦加工工具对镍铝青铜合金显微组织和机械性能的影响[J].表面技术, 2019, 48(12):102-107.

Lyu Y T, Nie B, Liu G H, et al. Effects of friction mixing tools on microstructure and mechanical properties of nickel-aluminum bronze alloy [J]. Surface Technology, 2019, 48 (12):102-107.

[2]孙晓峰, 陈正涵, 李占明, 等. 镍铝青铜合金及其冷喷涂涂层磨蚀行为[J].稀有金属材料与工程, 2018, 47(11):3493-3498.

Sun X F, Chen Z H, Li Z M, et al. Abrasion behavior of nickel-aluminum bronze alloy and its cold spraying coating [J]. Rare Metal Materials and Engineering, 2018, 47(11):3493-3498.

[3]Yang M, Yan D, Yuan F, et al. Dynamically reinforced heterogeneous grain structureprolongs ductility in a medium entropy alloy with gigapascal yield strength[J]. Proceedings of the National Academy of Sciences of United States of America, 2018, 115(28):7224-7229.

[4]陈正涵, 孙晓峰, 李占明, 等. 镍铝青铜基冷喷涂Cu402F与Cu涂层的力学性能[J].材料导报, 2018, 32(10):1618-1622.

Chen Z H, Sun X F, Li Z M, et al. Mechanical properties of nickel-aluminum bronze based cold spraying Cu402F and Cu coatings[J]. Materials Review, 2018, 32 (10):1618-1622.

[5]康全飞, 胡树兵, 曾思琪, 等. 船用螺旋桨材料镍铝青铜的热处理强化[J].中国有色金属学报, 2018, 28(1):107-115.

Kang Q F, Hu S B, Zeng S Q, et al. Heat treatment enhancement of marine propeller material nickel-aluminum bronze [J]. China Journal of Nonferrous Metals, 2018, 28 (1):107-115.

[6]张卫文, 谭伟, 罗宗强, 等. 铝青铜中组织与布氏硬度关系的定量金相分析[J]. 金属热处理, 2012, 37(9): 43-47.

Zhang W W, Tan W, Luo Z Q, et al. Quantitative metallographic analysis of the relationship between Brinell hardness and microstructure in aluminum bronze [J]. Metal Heat Treatment, 2012, 37(9):43-47.

[7]王智祥, 潘少彬, 叶艳君, 等. 固溶时效对热轧态QAl10.9-5-5合金组织及性能的影响[J]. 材料导报, 2016, 30(16): 82-85.

Wang Z X, Pan S B, Ye Y J, et al. Effect of solid solution aging on microstructure and properties of hot-rolled QAl10.9-5-5 alloy[J]. Materials Review, 2016, 30 (16):82-85.

[8]Menon S K, Pierce F A, Rosemark B P. Strengthening mechanisms in NiAl bronze: Hot deformation by rolling and friction-stir processing[J]. Metallurgical & Materials Transactions A, 2012, 43(10):3687-3702.

[9]赵欣, 单爱党. 大变形轧制制备细晶镍基合金的显微组织与拉伸性能[J]. 机械工程材料, 2017, 41(7): 76-79.

Zhao X, Shan A D. Microstructure and tensile properties of fine-grained nickel-based alloys prepared by large deformation rolling[J]. Materials for Mechanical Engineering, 2017, 41(7):76-79.

[10]Wu X, Yang M, Yuan F, et al. Heterogeneous lamella structure unites ultrafinegrain strength with coarse-grain ductility[J]. Proceedings of the National Academy of Sciences of the United States of America, 2015, 112(47):14501-14505.

[11]Gupta R K, Ghosh B P, Sinha P P. Design of heat treatment cycle for hardness improvement of Cu-9Al-6Ni-5Fe alloy[J]. Canadian Metallurgical Quarterly, 2013, 45(3):353-358.

[12]Nestorovic S, Markovic D, Ivanic L. Influence of degree of deformation in rolling on anneal hardening effect of a cast copper alloy[J]. Bulletin of Materials Science, 2003, 26(6):601-604.

[13]李振亚, 杨丽景, 许赪, 等. 时效温度对镍铝青铜合金的硬质相演变的影响[J].中国有色金属学报, 2016, 26(4):766-772.

Li Z Y, Yang L J, Xu C, et al. Aging temperature on nickel-aluminum bronze alloy hard phase evolution[J]. The Influence of Chinese Journal of Nonferrous Metals, 2016, 26(4):766-772.

[14]Barr C J, Xia K. Significantly enhanced tensile strength and ductility in nickel aluminium bronze by equal channel angular pressing and subsequent heat treatment[J]. Journal of Materials Science, 2013, 48(13):4749-4757.

Service：

【This site has not yet opened Download Service】【Add Favorite】