激光增材制造异构钛合金的力学性能及其变形机理

doi:10.11896/cldb.25020116

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Abstract Heterogeneous titanium alloys were fabricated by incorporating an appropriate amount of 316L powder into Ti-6Al-4V(TC4) titanium alloy powder, with the microstructure precisely modulated through in-situ laser powder bed fusion(LPBF). It was found that heterogeneous titanium alloys containing 4.5% 316L(TC4-4.5SS) exhibit the optimal combination of compressive mechanical properties, while the alloy with 2% 316L(TC4-2SS) shows a significant improvement in compressive strength without a corresponding enhancement in plasticity. The TC4-4.5SS alloy exhibits an increased content of stabilizing elements and a pronounced concentration gradient, which promotes progressive strain-induced martensitic transformation and enhanced plasticity. In contrast, the TC4-2SS alloy contains insufficient stabilizing elements in the β phase. As a result, extensive simultaneous phase transformations occurred during loading, leading to more pronounced work hardening.

Key words： laser additive manufacturing heterogeneous titanium alloy mechanical property β phase content phase transition

Published: 25 March 2026 Online: 2026-04-03

CLC number:

TG146.2

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	Articles by authors
	HU Yixiong
	DENG Fang
	ZHANG Kekang
	MENG Jinhui
	ZHAO Feng
	LIU Yang

Cite this article:

HU Yixiong,DENG Fang,ZHANG Kekang, et al. Mechanical Properties and Deformation Mechanisms of Laser Additive Manufactured Heterogeneous Titanium Alloys[J]. Materials Reports, 2026, 40(6): 25020116-7.

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https://www.mater-rep.com/EN/10.11896/cldb.25020116 OR https://www.mater-rep.com/EN/Y2026/V40/I6/25020116

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