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Trans. Nonferrous Met. Soc. China 28(2018) 1329-1333 Significant influence of sharp grain boundary corner on tensile elongation of copper bars with columnar grains and its mechanism Zhang-zhi SHI1... and Processing for Modern Transportation, University of Science and Technology Beijing, Beijing 100083, China Received 9 March 2017; accepted 18 September 2017 Abstract: The reason why elongation of copper......
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that the tensile strength and elongation of the SSSC-fabricated rod were improved by 22% and 17%, respectively, compared with those of the LSC-fabricated rod. For SSSC, the average particle size (APS) and the shape factor (SF) increased with the increase of re-melting temperature (Tr), whereas the tensile strength and elongation increased first and then decreased. The APS increased with increasing the mold......
results indicated that the UFG 7075Al alloy exhibits superior mechanical properties (yield strength of 350 MPa, ultimate tensile strength of 500 MPa, uniform elongation of 18% and tensile ductility of 19%) compared with the UFG 1050Al counterpart (yield strength of 170 MPa, ultimate tensile strength of 180 MPa, uniform elongation of 2.5% and tensile ductility of 7%). Fracture surface morphology......
by ball-milling, then this powder was made into high tenacious alloy with tensile strength above 650 MPa and elongation above 30% after a series of processes including press forming, pre-sintering..., after vacuum heat treatment, the performance of Mo-0.1Zr alloy rises obviously, tensile strength increases by 40%, elongation percentage increases from 7.3% to 31.2%, and alloy fracture translates from......
-Zn alloys investigated. Key words: Sn-Zn alloys; lead-free solder; wettability; tensile strength; elongation; joint strength 经过近10年的努力, 世界范围内电子用无铅焊料的研制和发展取得了令人瞩目的成就. 人们不仅筛选出可能代替传统共晶Sn......
phenolic resin; thermoplastic; elongation; ablation; [全文内容正在添加中] ......
拉伸试验机自动测量断后伸长率面临的难题及解决办法 周星1,李和平1 (1.宝钢股份公司,检测中心,上海,200941) 摘要:拉伸试验机,引伸计,试样测量台和机械手等技术的进步,使很多自动或半自动的拉伸试验机投入了使用,这些拉伸机测量抗拉强度,屈服强度等应力指标可以达到很高的精度,但是,自动测量断后伸长率却可能得出错误的结果.认识,验证和解决该问题是制造和使用拉伸机的有关人员面临的一个难题.介绍了笔者和某试验机制造公司共同进行的验证直接测量和不同修正方法得到的结果,并提出了用最大力总伸长率代替断后伸长率作为塑性指标. 关键词:拉伸试验; 断后伸长率; 自动测量; 修正方法; [全文......
="ChDivSummary" name="ChDivSummary"><正> The superplasticity of Ti3Al intermetallic compounds has been investigated in this paper.TheTi-14Al-21Nb ternary alloy showed 477% elongation at the strain rate of 1.49×10-5 s-1 and950℃.The elongation of Ti-14Al-21 Nb-3Mo-1V quinary alloy approached to 573% at the strainrate of 4.52×10-5 s-1 and the same temperature,and it was found that the elongation value......
