文章信息/Info

Title:

Effects of Cold Tandem Rolling on Microstructures and Mechanical Properties of TC16 Titanium Alloy Wire for Fastener Use

作者:

羅錦華; 孫小平; 楊輝; 侯峰起; 李海濤; 賴運金

1.西部超導材料科技股份有限公司 特種鈦合金材料制備技術國家地方聯合工程實驗室；2.中航工業沈陽飛機設計研究所

Author(s):

LUO Jinhua;  SUN Xiaoping;  YANG Hui;  HOU Fengqi;  LI Haitao;  LAI Yunjin

1.NLEL for Special Titanium Alloy Material Manufacturing, Western Superconducting Technologies Co., Ltd 2.AVIC Shenyang Aircraft Design & Research Institute

關鍵詞:

TC16鈦合金; 冷連軋; 冷鐓成形; 顯微組織

Keywords:

TC16 titanium alloy;  cold tandem rolling;  cold heading forming;  microstructures

DOI:

10.7502/j.issn.1674-3962.2017.04.09

文獻標志碼:

A

摘要:

冷軋加工不僅可以實現小規格絲材尺寸的高精度控制，也可以滿足對組織和性能有特殊要求的絲材加工。通過對比分析冷連軋和熱拉拔兩種加工方式制備出的TC16鈦合金絲材的性能和組織，研究了冷連軋工藝對TC16鈦合金絲材退火態和固溶時效態性能的影響。結果表明，冷連軋獲得的TC16鈦合金絲材經退火后的抗拉強度比熱拉拔加工絲材低，但是塑性較高，更有利于后續TC16鈦合金緊固件的冷鐓制成形；經過熱處理強化后，冷連軋獲得的TC16鈦合金絲材強化效果明顯，抗拉強度提高和塑性降低程度更為顯著。相比熱拉拔加工，冷連軋可有效破碎縱向長條α相并儲存更多的加工畸變能，是獲得優良退火態塑性和增強熱處理強化作用的主要原因。

Abstract:

TC16 Alloy wire which has high-precision dimension controlling and meets the special requirement of microstructures and mechanical properties was obtained by cold rolling. In this paper, the effects of cold tandem rolling on M and STA mechanical of TC16 alloy wire were investigated through comparative study of TC16 alloy wire prepared by cold tandem rolling and hot-draw. The results show that the M state tensile and yield strength of TC16 alloy wire obtained by cold tandem were lower, while the ductility was higher, and this benefits the subsequent cold heading formability. The result of solid solution for TC16 Alloy wire prepared by cold tandem rolling was evidenced, the tensile strength has been increased and the ductility has been reduced more drastically. Because the cold tandem rolling can break down elongated phase α of vertical microstructure and store more machining deformation, it makes significant contributions to ductility by annealed and solution strengthening by thermal treatment.