Effect of Heating Temperature on Microstructure and Mechanical Properties of Titanium Clad Steel by Hot Roll Bonding

被引：0

作者：

Chai Xiyang ^{[1
,2
]}

Shi Zhongran ^{[1
]}

Chai Feng ^{[1
]}

Su Hang ^{[1
]}

Yang Zhigang ^{[2
]}

Yang Caifu ^{[1
]}

机构：

[1] Cent Iron & Steel Res Inst, Beijing 100081, Peoples R China

[2] Tsinghua Univ, Beijing 100084, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2019年 / 48卷 / 08期

关键词：

heating temperature; roll bonding; titanium clad steel; reaction phase; PLATE; INTERFACE;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A symmetry slab of steel/titanium/separating agent/titanium/steel was assembled for fabricating titanium clad steel by hot roll bonding. The effect of heating temperature on microstructure, strength-toughness and bonding properties of clad steel plates were investigated at condition of 850 similar to 1000 degrees C. The results show that with the increase of temperature, the shear strength decreases obviously. The heating temperature has an important effect on the variety and thickness of interfacial phase. At temperatures of 850, 875 and 900 degrees C, carbon can easily enrich at the bonding interface and the reaction diffusion of Fe in titanium is weak. Consequently, TiC and beta-Ti form at the Ti/steel interface. While at temperatures of 925 and 950 degrees C, carbon enrichment at bonding interface stays at low degree and the diffusion reaction of Fe in titanium is strong. As a result, alpha-beta Ti, TiC and Fe2Ti are generated at bonding interface. At temperature of 1000 degrees C, the diffusion reaction of Fe in titanium gets stronger. Therefore, the interface products consisted of alpha-beta Ti, beta-Ti, TiC, FeTi and Fe2Ti form. In addition, the increase of heating temperature promotes the rise of brittle phase layer thickness. The reduction of shear strength is attributed to the increase of variety and thickness of brittle phase.

引用

页码：2701 / 2710

页数：10

共 17 条

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