Gaona Aero Material Co., Ltd.

Beijing Compo Advanced Technology Co., Ltd.

Shaoming Zhang

Jiantao Liu

Rui Wang

Lei Xu

Lirong Wang

Tian Xia

Zhigang Wang

Ming Zhang

Jie Zhu

Pin Zhang

Ning An

Yanbin Sun

Zhongnan Bi

Jiangsong Zhang

Huankun Zhang

Zhihua Zhu

Mingdong Liu

Huijun He

Xixue Liu

Qiang Hu

Fuwen Zhang

Jinglong Qu

Shoubo Han

Guangbao Sun

Huiping Ma

The present disclosure relates to the technical field of nickel-based superalloys, and in particular to a nickel-based superalloy and preparation method therefor, and a structural component. The alloy includes the following components in mass percentage: Co 17%-22%, Cr 9%-13%, Ta 2.95%-3.95%, Al 2.5%-3.5%, Ti 2.5%-3.5%, W 2.1%-3.5%, Mo 2.1%-3.5%, Nb 1.65%-1.95%, Hf 0.2%-0.7%, C 0.03%-0.08%, B 0.01%-0.06%, Zr 0.03%-0.07% and Ni. The nickel-based superalloys of the present disclosure, in the creep process at 780° C., produces specific Suzuki atmosphere in certain positions, and locks dislocations to improve creep resistance, such that the operating temperature can be raised to more than 780° C., which meets the requirements on the materials for the advanced aero-engines.

Nickel-based superalloy and preparation method therefor, and structural component

A SnBiSb series low-temperature lead-free solder and a preparation method thereof, which belongs to the technical field of low-temperature soldering. The lead-free solder includes by weight the following composition: 32.8-56.5% of Bi, 0.7-2.2% of Sb, with the remainder being Sn, wherein the weight percentages of Bi and Sb satisfy a relationship of b=0.006a2&#x2212;0.672a+19.61+c, wherein the symbol a represents the weight percentage of Bi, the symbol b represents the weight percentage of Sb, and the range of c is &#x2212;1.85&#x2264;c&#x2264;1.85. The solder alloy has a peritectic or near peritectic structure with a low melting point, and has an excellent mechanical performance and reliability, and applicable to the field of low-temperature soldering.

SnBiSb series low-temperature lead-free solder and its preparation method

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Beijing, China

Shaoming Zhang