Physical properties of WSTi3515S burn-resistant titanium alloy

Lai, Yunjin; Zhang, Pingxiang; Zhang, Xuemin; Liu, Xianghong; Feng, Yongbao; Kou, Hongchao; Ma, Fei; Zeng, Weidong

doi:10.1007/s12598-016-0705-8

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…However, the so-called "titanium fire" occurs under high pressure and friction ignites unfavorable and rapid burning, which is hard to control and leads to catastrophic accidents [1][2][3]. To address this critical issue, tremendous attempts have been made to reduce friction, or develop burn resistant coating and burn resistant alloys in advanced aero-engine, gas industry and automobile transportation [4][5][6]. Since early 1970s, researchers in America and Russia had evaluated burning characteristics of titanium alloys such as Ti3515, Ti64 and Alloy C by using laser ignition, and revealed the functional relations between combustion products and gas flow conditions.…”

Section: Introductionmentioning

confidence: 99%

Underlying burning resistant mechanisms for titanium alloy

Chen

Yang

et al. 2018

Materials & Design

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The "titanium fire" as produced during high pressure and friction is the major failure scenario for aero-engines. To alleviate this issue, Ti-V-Cr and Ti-Cu-Al series burn resistant titanium alloys have been developed. However, which burn resistant alloy exhibit better property with reasonable cost needs to be evaluated. This work unveils the burning mechanisms of these alloys and discusses whether burn resistance of Cr and V can be replaced by Cu, on which thorough exploration is lacking. Two representative burn resistant alloys are considered, including Ti14 (Ti-13Cu-1Al-0.2Si) and Ti40(Ti-25V-15Cr-0.2Si) alloys. Compared with the commercial non-burn resistant titanium alloy, i.e., TC4 (Ti-6Al-4V) alloy, it has been found that both Ti14 and Ti40 alloys form "protective" shields during the burning process. Specifically, for Ti14 alloy, a clear Cu-rich layer is formed at the interface between burning product zone and heat affected zone, which consumes oxygen by producing Cu-O compounds and impedes the reaction with Ti-matrix. This work has established a fundamental understanding of burning resistant mechanisms for titanium alloys. Importantly, it is found that Cu could endow titanium alloys with similar burn resistant capability as that of V or Cr, which opens a cost-effective avenue to design burn resistant titanium alloys.

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Section: Introductionmentioning

confidence: 99%

Underlying burning resistant mechanisms for titanium alloy

Chen

Yang

et al. 2018

Materials & Design

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Beta Titanium Alloys Processed By Laser Powder Bed Fusion: A Review

Colombo-Pulgarín

Biffi

Vedani

et al. 2021

J. of Materi Eng and Perform

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In βTi-alloys, some advances and developments have been reached toward optimizing their mechanical performance and their processability. However, the applications of these alloys via laser powder bed fusion (LPBF) are still under investigation. In this work, the processing of βTi-alloys via LPBF and their properties is reviewed with a focus on six selected metallurgical systems which are expected to be top performance materials in applications in the aeronautical and biomedical contexts. These six systems promise a better mechanical and functional performance considering different in-service environments for medical implants and structural applications. After literature analysis, the applicability of βTi-alloys to be processed via LPBF is then discussed considering the relevant fields of applications.

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