Preparation of KW–TiC Alloy, and Its Mechanical Properties, Resistance to Transient Thermal Shock

WANG Yijia; YAN Qingzhi

doi:10.16080/j.issn1671–833x.2019.19.041

您当前的位置：

首页 >

文章列表页 >

Preparation of KW–TiC Alloy, and Its Mechanical Properties, Resistance to Transient Thermal Shock

更新时间：2025-10-30

- Preparation of KW–TiC Alloy, and Its Mechanical Properties, Resistance to Transient Thermal Shock
- Aeronautical Manufacturing Technology Vol. 62, Issue 19, Pages: 41-46(2019)
- 作者机构：
  
  北京科技大学材料科学与工程学院粉末冶金与先进陶瓷研究所,北京,100083
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671–833x.2019.19.041
  CLC：
- Published：2019
- 稿件说明：
移动端阅览
王一甲，燕青芝. 碳化钛弥散强化钾钨合金的制备、力学性能及其抗瞬态热冲击能力研究[J]. 航空制造技术, 2019, 62(19): 41-46.

WANG Yijia, YAN Qingzhi. Preparation of KW–TiC Alloy, and Its Mechanical Properties, Resistance to Transient Thermal Shock. Aeronautical Manufacturing Technology, 2019, 62(19): 41-46.
王一甲，燕青芝. 碳化钛弥散强化钾钨合金的制备、力学性能及其抗瞬态热冲击能力研究[J]. 航空制造技术, 2019, 62(19): 41-46. DOI： 10.16080/j.issn1671–833x.2019.19.041.

WANG Yijia, YAN Qingzhi. Preparation of KW–TiC Alloy, and Its Mechanical Properties, Resistance to Transient Thermal Shock. Aeronautical Manufacturing Technology, 2019, 62(19): 41-46. DOI： 10.16080/j.issn1671–833x.2019.19.041.

摘要

通过机械合金化法和热轧加工，制备出变形量为70% 的碳化钛弥散强化钾钨（KW–TiC）合金。相比纯钾钨（KW）合金，KW–TiC 合金的晶粒尺寸显著降低，力学性能显著提高，具有2500MPa 的抗弯强度和更高的变形能力。KW–TiC 和KW 都具有低于250°C 的韧脆转变温度（DBTT）。经过真空下1800°C、1h 退火后，KW–TiC 具有与KW 类似的搭晶状组织，但晶粒尺寸比KW 更细小。在电子束热冲击装置上，对KW–TiC 和KW 进行0.44~0.88GW/m

的瞬态热冲击测试。在此能量密度下，KW–TiC 与KW 呈现出不同的开裂形貌，但由于TiC 的存在降低了合金热导率，导致KW–TiC 表面出现局部熔化现象。

Abstract

KW–TiC alloy was fabricated through mechanical alloying method and hot rolling process. Compared with KW alloy

the KW–TiC alloy exhibited bending strength of 2500MPa and higher deformation capacity. Both KW–TiC and KW had ductile-to-brittle transition temperature below 250°C. Annealing at 1800°C for 1 hour

no significant equiaxed recrystallization was observed. KW–TiC alloy had the similar structure to KW

but its size was much smaller. The thermal shock resistance of both alloys was characterized by an electron beam facility. Thermal shock tests were conducted at absorbed power densities from 0.44GW/m

to 0.88GW/m

. After the tests

the KW–TiC and KW alloys showed different crack morphology. However

the existence of

TiC reduced the thermal conductivity of KW–TiC alloy

which resulted in the surface melting.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Large-Distance Straight-Line Datum Construction Based on Laser Collimation

Electromechanical Behavior of Open-Hole Three-Dimensional Angle-Interlock Woven Carbon Fiber Reinforced Polymer Under Tensile Loading

Research on Ultrasonic Vibration-Assisted Milling and Grinding of Ceramic Matrix Composites

Assessment of Technological Advancement Based on Fuzzy Comprehensive Evaluation

Research Progress on In-Plane Shear Mechanical Behavior of Silicon Carbide Ceramic Matrix Composites

Related Author

No data

Related Institution

No data

The platform construction and operation are provided by Beijing Founder electronics co., LTD 京ICP备09064830号-19 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.
Total Visits：34526 Visits Today：4

⁰